Ipswitch Forums / IMail Server / Ipswitch Products

Barracuda / Imail Integration Plan

j8401 — Tue, 13 May 2008 00:29:42 GMT

We are considering purchasing a Barracuda Spam Firewall to help reduce the amount of spam we receive.

Most posts and documentation that I read about this make it sound very easy to implement. Can someone that has experience with a Barracuda and Imail let me know if my plan is somewhat correct and if the installation is as easy as everyone says?

1. Update DNS for domain.com to include 2 MX records mail.domain.com(imail), and mail2.domain.com(Barracuda).

Is this possible/or a good idea, receive using the barracuda and send using the imail server?

2. Configure the Barracuda to forward email to the Imail server
3. Enable SMTP AUTH only connections on Imail server on alternate port 587 for external users
4. Disable incoming connections on ‘mail.domain.com 25’ (Imail server) in the firewall
5. Enable incoming connections on ‘mail2.domain.com 25’ (Barracuda) in the firewall

Does anyone see any potential problems/issues with this setup?

Since all external users will be connecting via port 587, there is no reason to leave incoming port 25 connections for mail.domain.com (imail) open on the firewall right?

Is there anything you can recommend I watch out for or change in the Imail configuration when installing the Barracuda?

Thanks in advance for any suggestions or advice. :D

Move users folder to a new drive

sthompson — Wed, 14 May 2008 12:17:45 GMT

So I finally got my server moved and stable and I've run into an issue. It seems that the key in the registry that I thought would redirect the users folder from its default location on C: to the path I specified in the key (D:\iMail\users). However, it seems that the Top Directory key overrides this key and didn't pick up the old mailboxes I moved from the old server. I've already got spool moved. Is it possible to redirect just the users folder? The C: drive on the server I moved iMail to is short on space (this server was already made that way for another application that runs on it, not by my choice) so the mailboxes will soon overwhelm the free space left. The D: drive has plenty of space so I want to put it there. I'd rather not move everything under the iMail directory to do so, but I will if I have to. Is it possible?

Imail 8.21 Script error when using web admin tool

alsupenator — Wed, 14 May 2008 15:42:34 GMT

I have been having a problem when administering my 8.21 imail server over the web. The problem happens when i try to save a change I've made in the Spam filter controls. I get an error about slow script do you want to continue. This is a relatively new problem, since I've been on version 8.21 for a long time.

The exact error is:

A script on the page "Phrase Filtering" (http://mailserver.mydomain.com:8383/X74219e9299cb92cfc9996a023c21/phrasefilter.22491.cgi?uid=malsup&mbx=bounced&Domain=mydomain.com) is making Safari unresponsive. Do you want to continue running the script, or stop it?

This error occurs on both Mac and Pc's and across all browsers. Is there a file I can replace or fix?

Anyone know what i should do to fix it? Is it Imail or is it the Windows 2000 box that I am running Imail on?
thanks in advance.

webmail address book problem

utri007 — Thu, 15 May 2008 05:24:43 GMT

I recently had problem with my mail server, and I needed to restore it from backup.

Everything works fine now, BUT some people can't see their address books. Aliases.txts are in right place, so that can't be a problem.

Any hints?

failure notice - MAILER-DAEMON - Undelivered Mail Returned to Sender

proadvantage — Thu, 15 May 2008 15:24:04 GMT

My server, is being inundated with these types of emails. All my hosting clients are getting them. There are about 10 to 20 every few minutes. Does anyone know step by step instructions, in IMail, on how to eliminate these emails?

Thanks
proadvantage

Spam help

Yamezbond — Thu, 15 May 2008 22:13:58 GMT

Hi all, I need some advise on how to stop the fake or spoofed emails that I receive every day. Could you please help me?
I use Imail 10 recently upgrade last week.

Thanks

Schedule Regular mail Box Cleanout ?

rockfort — Fri, 16 May 2008 09:53:09 GMT

Is there a utility to schedule deletion of mail in designated mail boxes? Some users do not interface with their accounts frequently enough to manually clean out the mail (mostly junk) that piles up, which makes email account unusable in a short period of time. There must be some utility within iMail that facilitates this need. As an admin, I do not have the time to do this manually for every domain/user on the server. The server is running iMail 8.x

Thanks in advance.

anyone try version 10 yet? (the official release)

jerger — Wed, 23 Apr 2008 11:37:30 GMT

any thoughts?

Imail 10.x installed and working well in main mail cluster.

kiamori — Thu, 15 May 2008 22:00:12 GMT

I've tested and installed Imail 10.x, everything seemed to work fine in the test environment so I moved it to main mail server cluster. Again everything installed properly and It is actually working quite well.

With that being said, I do have several complaints.

Imail Installer once again messed with my folder security settings and I had to go in and fix it after in order to make it fully secured.

Note to Ipswitch: Please add an option to the installer to leave my security settings alone, I waste an hour fixing security settings after your installer goes in and messes with things.

Ok, my second grief with Imail 10.x is the web-mail does not update properly after deleting several emails. For instance when you Ctrl+Click and select several message to delete then hit delete it will delete them all but sometimes it still shows some of these emails in the box after rebuilding the page, so you have to refresh the page in order to get them to disappear.(very annoying) Perhaps it's reloading the page before it's done deleting the emails. Is there a quick fix for this?

Third grief is the "lite" web-mail interface and the only reason I upgraded. I've had clients unhappy with the speed of Imail since the "upgrade" from the old CGI version(it was super fast). So when I saw "lite" I was thinking great they finally fixed the speed and yes I do admit it's a bit faster. However, it is so lacking in features and ease of use that it's basically worthless, that seems harsh but it's the truth. My suggestion is for Ipswitch to bring back an interface like the old CGI interface but keep with the ability to run on port 80 like the current versions.

Now for the good parts:

In general it is faster and uses a bit less resources on the server cluster than the 9.x versions.

The new function to make sure users are using secure passwords I hope will save me hours of tracking down compromised accounts but how do I configure this? or is this a pre-configured thing thats part of a dll build?

I like the option to use UTF-8 in the user pref for better multilingual support. Great addition.

oh, and the new calendar looks great but it should really run in the same window or at least an option to do so for simplicity. My users hate new windows.

The Contacts area is better but still lacks an import/export feature.

I think thats about it, if you are looking to upgrade I would say go for it as soon as they fix the delete refresh issue which should be a quick and simple fix I would think.

How Do I Clean out a Mail Box

rockfort — Wed, 14 May 2008 15:11:52 GMT

HI, I am running a 8.x iMail server. A very important email account is orverwhelemed with spam and at this point hard to navigate (300 + megs of mail). I would like to clean it out completely by physically logging into tthe server, navigateing to the imail folder/domain/user account, and deleting all the mail. Can anyone please give me a heads up on this? I have attempted to use a mail client (MS outlook) to download and delete the mail, but several attempts have taken as many days, and at the end of each attempt, it starts over again.

So the only solution is to clean it out from the server.

Thanks in advance

Mail from Hotmail blocked by Premium Filtering

Roberto — Wed, 14 May 2008 03:54:00 GMT

Hello,

All the emails coming from hotmail are blocked by the Premium Antispam Filter (even legitimate mails) . I don't think this is normal.

Anyone with the same problem?

webmail login issue

phi8club — Tue, 13 May 2008 18:30:53 GMT

...on the button rather than hitting 'Enter' on the keyboard.

say I have an email account myemail@mydomain.com - at the login screen, before migrating to our new server/Imail Server version (Imail Server 2006 from version 8.22) - we used to be able to enter just the prefix w/o qualifying the entire email account on the login page. Now, it cannot work unless the email is fully qualified in the login field. Also, in Firefox (works fine on IE), if you enter the whole email address, tab over to the password field, enter the password and hit 'enter' - the process fails with: Invalid Username/Password. The user needs to manually click on the "Login" button. Actually, examining it now, it seems like in firefox, although the password may be remembered on the page and you see the asterisks representing the hidden password, the default focus is on the Username field; if you tab from this to the password field the password asterisks disappear, but if you enter the password while the focus is on the password field and hit enter, login works w/o having to click on the login button. it would appear that saving the password on the page in firefox actually does NOT save it - I guess I can live with that.

But is it possible to have it set such that the Username field need only be the prefix of a user's email account rather than the whole?

imail list erver help requests are rejected

gazzaf — Wed, 14 May 2008 08:10:13 GMT

Whenever anyone sends an email to request help about a list, their request is rejected with the following message:

The Help Message for (listname) is for subscribers only!

The initial help request is from someone subscribed to the list. This problem is affecting all of our lists in multiple domains. The rejection messages are coming from the appropriate list-owner addresses.

Even the list owners are getting the rejection messages, if they attempt to send a help command to their list.

Thanks for any help on this.

requests for list help are being rejected

waynemr — Wed, 09 Aug 2006 12:37:07 GMT

Error Type: LoadXML for new accounts logging into WebMail

Mjoyner24 — Tue, 13 May 2008 20:42:01 GMT

I have looked all day trying to find a solution to this. I have read the forums that relate to this and it seems that none of the solutions work or apply.

We had a drive failure and migrated our Imail to a new server. We are using Imail Secure Server 9.1 with a SQL database.

We have not had any issues until today. We realized the when we set up a new mail account that account user can not load the default page in webmail.

It logs them in then pops up an IE error message that says:

Error Type: LoadXML

Description: Incorrect XML

After clickin ok the left panel stays blank and the top right panel just keeps spinning.

Users already set up have no problem logging in.

I have tried resetting IIS as mentioned in an earlier post and have ruled out an Access DB issue since we use SQL. I also tried resetting the thread count in the DSN. None of these suggestions have worked.

Any help is greatly appreciated.

Accept Mail for Domains Bound to a Specific IP Address

pkmag — Mon, 12 May 2008 19:43:08 GMT

Is there a way to configure IMail to accept mail for domains only on the IP address to which it is bound?

Example:

I have 2 domain names: dom1.com is bound to 192.168.0.1 and dom2.com is bound to 192.168.0.2. If I connect to 192.168.0.2 and send a message destined for info@dom1.com it will be delivered even though dom1.com is not bound to 192.168.0.2.

Is there anyway to force IMail to not do this? The plan is to use a barracuda to filter spam for some domains but not all. Spammers can bypass the barracuda, or even the built-in Premium Antispam if they find the other IP addresses that IMail is listening on.

This seems to be a flaw in the design of IMail Server. If I have dom1.com (192.168.0.1) with antispam enabled but a server sends mail to 192.168.0.2 destined for info@dom1.com, it will easily bypass the Premium Antispam.

Thanks in advance.

Pat

Last Login Utility - How do I get a copy?

cpaasche — Mon, 12 May 2008 14:45:25 GMT

Hi,

We have more than a few stale accounts. I see that there is a "last login" utility but I have searched our server (lastlogin.exe)(login), the KB and googled with no luck. How do I get a hold of this tool?

Thanks.

Mailbox will not open in Webmail

dfolger — Mon, 12 May 2008 14:17:37 GMT

Hi, we're running Imail 9.23 on a Windows 2003 Server. We just migrated all of our user folders from our old server (running the same version of Imail and same OS) but now we're having problems with a few clients being able to open their mailboxes through webmail. The accounts in question each have about 1 to 2 GBs worth of MBX files. When we connect to their mailbox using IMAP4 (through Outlook) for the first time it takes only a few moments for it to populate, however when we log in through the webmail we get the two loading spinners (tree & message), and after several minutes we get a javascript error ("Error: 'undefined' is null or not an object"). I doubt the problem is with the hardware configuration since the machine is much faster than our old server, and we're barely pushing any CPU or IO on the machine. Any help you can provide would be greatly appreciated.

David

IMail Server and Nortel CallPilot

MrHanMan — Mon, 12 May 2008 10:36:22 GMT

Has anyone tried to integrate Nortel CallPilot with IMail? CallPilot is Nortel's voicemail solution and with it you can send emails with attached voicemails, and you can call in and have CallPilot read you your email. The trouble is, officially, the only email servers supported by it are Lotus Domino, Novel GroupWise, and Microsoft Exchange. I was hoping someone here had tried this and succeeded. Thanks for your help.

Problems in the version 9.23

Ricardo_Leka — Wed, 07 May 2008 16:44:00 GMT

Greatings,

I use the version 9.23, and the I already have a case number in the support 109121 but no one in the support have the capability to resolve my problem.

The problem is:

I use a Windows 2003 R2 SP2 and a SQL 2k Enterprise Edition SP4.

All my domains stay in the SQL except the root domain.

I have 40 domains and more that 3k users.

A long time I have problems with in random cases the flags are clean (in the user properties) or problems change the password to blank.

In the case of blank password I cange the table to not accept null in the column Password.

but the flags is a big problem.

i change the owner of the tables to a dbo user and change the permission of user imail in the columm flags, this work, but, some times the user imail create a database using the same name but no information and my users can´t logon. after drop this table the imail read the other table and log my users.

The support only know uninstall and reinstall the imail.

IMail Plus antispam vs. 3rd party options

cmcfarling — Fri, 02 May 2008 12:57:11 GMT

I'm currently running IMail 8.2. The only spam filtering in place right now is the IMail built in filtering rules. I'm wondering if it would be worth it to upgrade to IMail Plus v10 and get a servcice contract to utilize the advance spam filtering. Or, would a 3rd party solution be a better choice such as Declude, Baracudda, Watchguard ( I have a Watchguard firewall that can be configured with an anti spam option).

I'm looking for something with as little administrative overhead as is reasonable. I really don't want to be tweaking filters every couple days. Will IMail Plus fill the bill?

SMTP config : no mail relay

Microdemo — Wed, 23 Apr 2008 04:31:13 GMT

Hi everyone,

My serveur is Imail 2006.23

Smtp configuration is set to : No mail relay. My users can send mails to remote servers because they are idetified by mail and password.

I have a lot of mail who are send to my local users by my mail server : it's possible to send mail to local users without beeing authentified.

Its a problem because my users received a lot of spam by this way.

I can't filter by ip because i have a lot of users who are conected from a lot of different places.

Is there a way to prohibit it ? (sending mail to local users without beeing authentified)

Thank you for your answer.

all mail for a domain to forward to an external email address

paries — Thu, 01 May 2008 19:55:55 GMT

hello,
can i do this?
I have a virtual domain setup and would like all incoming email for that domain to forward to an external email
Thanks for any help
Randy

Anyone implement a greylisting solution in front of Imail?

Nektar Meletakos — Wed, 12 Sep 2007 13:41:51 GMT

Has anyone done this. I have been looking at greylisting and it seems to a simple and very effective way to cut down spam. Has anyone had any success in implementing this in an IMail environment?

I guess it would take another smtp server with the greylisting and then forward all good emails to the imail, right? The only issue I have with that is the outgoing mail. If it's the IMail box that delivers directly there would need to be an MX record of that IP address, thus allowing incoming mail messages to be delivered directly to the IMail server, being as it is the secondary MX. Unless the Imail server forwards everything through the same smtp server handling incoming connections??

Looking for some real world feedback.

Block spam with fake FROM from my domain

cmcfarling — Tue, 06 May 2008 22:57:29 GMT

Using the basic IMail antispam settings, is there a way to block emails whose FROM header is set to a fake user on my domain? For example, my domain is mydomain.com. I've added mydomain.com to the White List to keep vaild user's mail from being blocked internally within the company. If a spam message comes in with the FROM header set to xvfdger@mydomain.com, it is allowed through even though it's spam and would otherwise be caught by the other antispam settings.

The White List trumps all the other spam settings, correct? Is there a way to handle this situation?

Slow SMTP

mairoldi — Fri, 09 May 2008 02:36:03 GMT

Dear All,

I've noticed this kind of problem with Imail 8.15 Hotfix 2.

I made two installation on two different hardware and have the same result when we use SMTP send session is about between 300 - 350 Kbit/s for any email.

Any Suggestion ?

On localhost it work fine an the same from same network; but when the session is from internet every user as this kind of problem.

Could be the network interface or there is somthing inimail configuration to set ?
Rgs

AM

Deleting old mail

jcampbell — Thu, 08 May 2008 20:22:08 GMT

I’m trying to get this .bat file I created to work properly. It runs fine but doesn’t seem to work right.

here is what I have;

immsgexp -tc:\imail\users -d30 -mmain.mbx

immsgexp -tc:\imail\users –d7 -mdeleted.mbx

immsgexp -tc:\imail\users –d10 -msent.mbx

After I run the bat, then I’ll go through some of the user accounts and they will still have several older then specified messages in there boxes?

Any ideas?

Thanks

Corrupt spam or inbox folder in webmail? Look here for a solution

jerger — Thu, 20 Mar 2008 10:38:27 GMT

I'm not sure how often you guys run into this, about once a week for us a user will state they cannot see their inbox or spam folder... getting a red-x error message in webmail.

If that happens, don't delete the mailbox mbx file... instead delete the .xml file for the inbox or spam folder in their user folder. like spam.xml.... this refreshes the page and fixes the issue keeping their emails in tack. Just a tip

is this ok for our two dns servers (internal and external use)?

jerger — Wed, 07 May 2008 09:59:44 GMT

ok we have two dns servers... one for our internal use ... and its used by our smtp smartermail email server, hosted on a machine called CITRIX. the mail server is ETP. the web server is ITP and it also hosts are DNS server for external uses and updates (not used by internal or our mail server). thanks for your help guys:)

1. citrix.. hosts dns servers for internal use
2. etp hosts email server
3. itp hosts web IIS and dns external..

CITRIX- internal dns settings for cleanhound.com

(same as parent folder) - MX [10] etp.cleanhound.com
(same as parent folder) NS citrix.etradepress.com
(same as parent folder) Start of Authority (SOA)... [13] citrix.etradepress.com., admin.etradepress.com.

etp Host (A) 192.168.100.50 (this is the ip for the mail server hosted on ETP)
itradepress Host (A) 192.168.100.46 (IP for web server hosted on ITP)
mail Alias (CNAME) etp.cleanhound.com.
www Alias (CNAME) itradepress.cleanhound.com

****************************************
ITP ... external dns server... for cleanhound.com settings (not used by our mail we use citrix aka 192.168.100.8)

(same as parent folder) Host(A) 207.250.223.50
(same as parent folder) MX [10] etp.cleanhound.com
(same as parent folder) NS itp.tradepress.com (remeber ITP is web server)
(same as parent folder) NS ns1.milw.twtelecom.net (our ISP)
(same as parent folder) SOA ... [2006101906], itp.tradepress.com., admin.tradepress.com.
(same as parent folder) Text (TXT) v=spf1 mx ptr ip4:207.250.23.0/32 -all
etp Host (A) 207.250.223.50 (external ip address for mail server)
itp Host(A) 207.250.223.46
mail Alias(CNAME) etp.cleanhound.com
www Alias (CNAME) itp.cleanhound.com

Now we use 192.168.100.8 (the internal citrix server) for our internal dns and smtp delivery... is that ok for smtp email? or should we really be using the external dns server? are these settings good/bad or would they lead to performance issues? thanks!

Help for a rule

Microdemo — Mon, 21 Apr 2008 13:59:22 GMT

Hi everyone,

i'm running Imail 2006 and all my domains are virtuals except the primary.

Some of my domains are configured with an antispam service provided by an another company.

On emails headers who arrived by this service, i got a tag on the Header : Here : X-ANTISPAM

I receve locally al lot of spams and i want to set up a rule who did :

1 - If the mail didn't arrived by my antispam provider

2 - AND

3 - If the mail is not send by one of my local domain

4 - Put it on spam mailbox

Here si my rule :

<Rule 1>H!=X-ANTISPAM!AND!F!~(domain1.com\domain2.com\domain3.fr\domain4.com\domain5.com\domain6.com\domain7.fr\domain8.com\domain9.com):spam

This rule didn't work and i don't understand Why.

Do you have an idea ?

Thank you for your answer.

Need to shawdow/copy all inbound and outbound mail for an account

cscotech — Tue, 22 Apr 2008 18:46:34 GMT

we've got an issue were we need to start shadowing one user on our server and make copies of all their inbound and outbound email. also we need to do the same for a particular outside email address that is sending messages to internal users - i know the outside email address but it's a number of different internal email addresses that sometimes change. we would like all this to take place without alerting anyone.

where do i go to do this?

IClient remote access

jeffgaj — Mon, 28 Apr 2008 17:44:22 GMT

We are having problems accessing IClient from remote locations. There is no problem with IAdmin, but when we try IClient, we get the following message in Internet Explorer:

<%@ page language="c#" validaterequest="false" inherits="Ipswitch.Web.Client._Default, App_Web_65rxg8uy" %>

My feeling is that it's a Windows IIS issue but any help or advice would be appreciated.

Imail 8.15 - Maximum Hosts?

craigedmonds — Wed, 23 Apr 2008 14:55:45 GMT

Hi All,

One of my mail servers is running Imail 8.15 with Declude 4.X. and is sitting behind an alligate gateway.

Is there a limit to the amount of domains/email accounts I can host before service quality starts to deteriorate? Can I host say 500 domains/hosts with 10,000 email accounts?

Does Imail have a limit?

FYI: The mail server itself is a Xeon 3.2 with 4Gb Ram and 250GB 15k scsi drives.

Thanks

TLS Issue

apsy — Fri, 02 May 2008 17:05:21 GMT

We are a healthcare provider, thus fall under HIPAA.

Our e-mail path is as follows: Outgoing - IMail Server 2006 uses a Tumbleweed server as the gateway. IF the e-mail is destined for our insurance company, the Tumbleweed server will send it via TLS. If it is destined for any other domain, it goes normal. IMail server does not go directly to the internet.

Incoming - MX record points to 3rd party SPAM and Virus detection. After cleaning, mail is sent to Tumbleweed server. If from insurance company, mail is unencrypted by Tumbleweed and sent to IMail server. If from any other host, it is sent directly to IMail server.

We are changing our mail to go through Postini. This means that a TLS connection needs to be set up between IMail server and Postini (we are doing away with the Tumbleweed server). Outgoing mail will travel to Postini and then sent to final domain. If to insurance company, it will be sent from Postini via TLS. All mail from IMail to Postini will be TLS.

Incoming - MX record will point to Postini. Postini will do SPAM and Virus checks, then send to IMail server directly via IP address.

Incoming from insurance company will go directly to IMail Server via IP address.

Looks easy on paper.

Followed Ipswitch instructions on creating SSL Certificate and installed certificate as per instructions.

Went to IMail admin and checked box for TLS in SMTP properties. Stopped/started SMTP and Que Manager.

Had insurance company send test message to IMail server (required TLS from their end). They received error - unable to establish TLS connection.

No firewall issues, as same type of traffic was flowing in with no problem to Tumbleweed server.

Contacted Ipswitch Tech Support. I asked if certificate had to be installed/activated anywhere for TLS. He said no.

The problem is that TLS is not working. What step have I left out on this? Does SSL have to be checked? I created a certificate. I installed it via their instructions but how does it relate to the TLS?

Nothing against the support dude, but I don't believe he was quite understanding where I was coming from and/or did not understand the concept of TLS between servers.

Any help would be appreciated.

Antispam-table.txt Help needed

zuke — Fri, 02 May 2008 15:49:58 GMT

Looking for additional help on the number with in the antispam-table.

Example: specializing,10264,391,4022

I know the last two numbers are number of times a message was good and the number of times the message was spam, but what is the first set of numbers.

I have several new words I would like to add, but don't know what this number represents.

Thanks in advance

Emailing appointments

MrHanMan — Thu, 01 May 2008 14:16:40 GMT

Is it possible to email web calender appointments to other Imail users and to Outlook users? If so, how is this accomplished?

callback error

grayden21 — Wed, 30 Apr 2008 20:25:16 GMT

First off, I am using IMail Plus 10 newly upgraded from 9.03, and so far so good...except one thing...
I was checking to see what if any false positives a spam account that I created was catching. In my anti-spam rules, I set the action to forward to spamuser@ourdomain.com. When I log on as that user on the web client, then do a search for messages 1 week from today's date sent to myuseraccount@ourdomain.com, the first page of x number of results does appear. However, when I move the slider forward to go the next pages, I get the following error in the browser (from both Mozilla and IE): "Callback error: column 'selected' not found in data source." I can't see anything but the first page of messages in a search. Has anyone seen this?

false positive URL domain blacklist

dfink — Thu, 01 May 2008 13:30:17 GMT

Just found that an email was rejected by anti-spam that contained the wording

club.live.com

I found the entry clubxxxlive.com in the URL domain blacklist. It appears it mistook the xxx for a "." and rejected the email.

SPF?

radigan — Wed, 30 Apr 2008 10:05:01 GMT

We have a relatively older version of IMail Server it's version 2006.1

In the help file, it states that SPF checking can be enabled. However when I use the IMail Administration Website and navigate to the location stated in the help, it does not exist. I see the Anti-Spam option, but nothing about SPF anywhere in the admin site.

Any ideas?

Users from ALL domains with LDAP

Ellis — Mon, 02 Apr 2007 07:29:24 GMT

With iMail 8.22, is there a way to get the list of users from ALL domains ?

I'm not familiar with LDAP syntax, I can get a user information with o=mail.domain.com but is there a kind of o=all or some other method ?

Thank you !