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Exchange 2003 Server will not allow Internal Servers to Relay

Posted on 2010-09-16
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Last Modified: 2013-11-30
i am having issues with my exchange server allowing mail to relay through it. I have everything setup correctly and just noticed that i can't telnet to port 25 from any of the Allowed ip addresses i have in the print screen. This was working at one point and looks to me like it just stopped in the past week or two. I am still able to send regular exchange emails internal/external any ideas.

So if you look at the image i am on the server 172.31.9.5 and i try telnet 172.31.1.202 25 it doesn't work

172.31.1.202 = Exchange 2003 Server???

relay.jpg
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Question by:adamshields
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Expert Comment

by:Akhater
ID: 33695510
new firewall ? antivirus ? can you telnet to it port 25 from any OTHER ip than the one listed?
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Expert Comment

by:endital1097
ID: 33695548
check the connections button on the same tab as relay
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Author Comment

by:adamshields
ID: 33695608
no new firewall or AV

this is very odd

from 172.31.1.224 and 172.31.1.40 I can telnet

but from 172.31.1.200 I can't telnet

what could this be????


relay2.jpg
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by:adamshields
ID: 33695618
none of them are in the relay list some work and some don't
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Expert Comment

by:Akhater
ID: 33695620
when you CAN telnet can you please copy past the SMTP banner you get ?
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by:adamshields
ID: 33695635
220 MYDOMAIN.net Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at  Thu, 16 Sep 2010 15:28:35 -0400
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Akhater earned 500 total points
ID: 33695651
could it be an antivirus on the client side ?
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Author Comment

by:adamshields
ID: 33695691
wow your right i disabled Mcafee on the client and it worked!!!! Thanks now i just have to figure out what setting is different from my other servers
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Expert Comment

by:Akhater
ID: 33695705
you mean even when you can telnet you still can't relay ?
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Author Comment

by:adamshields
ID: 33695720
no i CAN sorry i was talking about settings in mcafee
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Expert Comment

by:Akhater
ID: 33695732
great then !
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by:adamshields
ID: 33695736
thanks for your help
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Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

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