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| | | Time Traveler
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Last Login: 9/4/2008 11:43:24 AM
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| should the dns setting on the smtp page have the internal or exteranal ip address for faster delivery? for example:
192.168.100.9
or
208.253.133.1 (made up external ip)
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| | | Forum Guru
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Last Login: 2 days ago @ 4:06:08 AM
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| Since a properly securly configured server setup will NOT have both private and public IPs on a server, the DNS server being used would be the one designated for use by the servers. However, many of us have found and suggested that the Imail server be configured with a CACHE ONLY DNS service exclusivily used by Imail and any related software for domain looks and that CACHE ONLY DNS service would have no forwards but go directly to the root servers for quickest look up times.
John T
eServices For You"Life is a succession of lessons which must be lived to be understood." Ralph Waldo Emerson (1802-1882) |
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| | | Time Traveler
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Last Login: 9/4/2008 11:43:24 AM
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| | please answer this... use 192 (internal) or use the external ip.. which one? lol. |
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| | | Forum Guru
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| jerger (1/29/2008)
please answer this... use 192 (internal) or use the external ip.. which one? lol.Please think about what you are asking. How are we supposed to know the answer to that question since we have no idea whatsoever of your network configuration. If you want to know what the recommended DNS configuration is, I told you. If you want to say "no I want to do it my way" then you are going to have to be more forth coming with details. Where are the internal DNS servers in relation to the Imail server? Where are the external DNS servers in relation to the Imail server? How many hops away are they? Do they then point to other DNS servers, or do they go to the root servers? Are there resource usage limits on any of them?
John T
eServices For You"Life is a succession of lessons which must be lived to be understood." Ralph Waldo Emerson (1802-1882) |
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| | | Time Traveler
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Last Login: 9/4/2008 11:43:24 AM
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| =) Thanks for the response.
TW= time warner telecom
1. we have a mail server (192.168.100.8) that hosts our dns information for our websites and mx/n records.
-This server's dns is then TW's dns... which I do not have in front of me so 208.35.95.100 (made up)
2. we have our mail server.... which has the network configuration pointing to TW's dns (or alternatively 192.168.100.8)
-we also can change the dns setting in our smtp service... should we use TW's or our internal server that then calls TW. To me, that seems like an extra step.
NOTES:
a. TW's server if you ping it fails to make a connection 3 of the 4 pings, the 4th ping is 30ms. If we use TSR's (not our ISP) we get 4 successful pings at 6-10ms, however they are not our ISP I do not believe we can setup proper zone transferring and reverse dns requests.\
b. If TW's dns server is causing our queue to build up or slower email delievery, how can we setup our mail server to meet the following goals:
1. send out email successfully with out dns errors or retrying due to timeouts
2. successful reverse dns requests
3. zone transfers ... |
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| | | Forum Guru
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Last Login: 2 days ago @ 4:06:08 AM
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| jerger (1/30/2008)
=) Thanks for the response.
TW= time warner telecom
1. we have a mail server (192.168.100.8) that hosts our dns information for our websites and mx/n records.
-This server's dns is then TW's dns... which I do not have in front of me so 208.35.95.100 (made up)
2. we have our mail server.... which has the network configuration pointing to TW's dns (or alternatively 192.168.100.8)
-we also can change the dns setting in our smtp service... should we use TW's or our internal server that then calls TW. To me, that seems like an extra step.
NOTES:
a. TW's server if you ping it fails to make a connection 3 of the 4 pings, the 4th ping is 30ms. If we use TSR's (not our ISP) we get 4 successful pings at 6-10ms, however they are not our ISP I do not believe we can setup proper zone transferring and reverse dns requests.
b. If TW's dns server is causing our queue to build up or slower email delievery, how can we setup our mail server to meet the following goals:
1. send out email successfully with out dns errors or retrying due to timeouts
2. successful reverse dns requests
3. zone transfers ...First of all, B3 is a non issue since there is no zone transfers going on anywhere in relation to Imail or email delivery. That is a different function for a different purpose. The basic recommendation for Imail DNS servers stands: Install/enabled the included MS DNS Server service on the Imail server in CACHE ONLY mode, meaning do not create any zones. No other server anywhere is to call this DNS server except Imail and any related software such as Delclude. Do not configure any forwarders. Configure Imail to use the assigned IP to the DNS Server service (I do not like to use 127.0.0.1 and always assign a seperate appropriate IP to the NIC and then to the DNS Server service) on the server. Imail then has one and only one lookup to make, to the local DNS Server service. That service will then ask the root servers for the servers for the TLDs and then those servers for the subdomains and so forth. This is a very quick resolver and will indeed add to the overall performance of the server, even figuring in the added overhead to the TCP/IP stack.
John T
eServices For You"Life is a succession of lessons which must be lived to be understood." Ralph Waldo Emerson (1802-1882) |
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| | | Time Traveler
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Last Login: 9/4/2008 11:43:24 AM
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| thank you i am not sure if this is how we have it or not i'll pass it on to my boss. you are great help. also in your other reply you stated that it could be a limit... so sinced we switched to tsr's dns that we know little aboot, that could be the issue.
also is any special software needed to create the cache? or is this done in win2k3 (dns) settings?
update:
open relay: should our local server with the campaign enterprise (bulk mail software) that sends email to the queue on ETP (mail server)... be included in our relay list?
192.168.100.248 (campaign software pc)
this is from the smtp relay menu....
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| | | Forum Guru
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| Question for you: This "compain" email server, is there a reason why it can not send out directly to the recipiant server? Why does it have to go through Imail?
John T
eServices For You"Life is a succession of lessons which must be lived to be understood." Ralph Waldo Emerson (1802-1882) |
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| | | Time Traveler
Group: Forum Members
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