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Mails from remote location not able ti send

Hello All

i have 3 exchange 2003 server in 3 different locations, all thses 3 locations connect through VPN tunnel,
Lcation 1 is my coporate, locaion 2 and 3 are remote locations, but for some reason when i send email to a user from one reomte location to another remote location, the mails stays in the queue and not sending its all in same damain..

Please help me

Thanks
Suresh

poweruser32

if you click on the q does it give any more info as to why it is not sending?
are all the servers in the same routing group in esm?
check thatyou have no external dns servers configured on the remote ex servers in their smtp-delivery advanced tab as well in esm

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poweruser32

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SOLUTION

Sembee

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xavier_amala

ASKER

Guys thanks for fast reply, when i click on the Q, it says the remote server did not respond, it was working fine, but suddenly it stopped working. Also from one server i cannot telnet to port 25 vice versa.

Thanks
Suresh

xavier_amala

ASKER

Just FYI, Active directory sync across all the sites perfect no problem.

xavier_amala

ASKER

Hello All

when i read couple of articles most of them says, this problem can be solved by making routing group, but nothing gives a very clear about it. Can anyone give me step by step guide how to create routing group.

i have 1 master exchange server in corporate and 1 in remote location A and another 1 in aother remote location B, how do i setup routing group and in which server i need to setup

Please help

Thanks
Suresh

Sembee

A routing group will not assist in delivering email. If the servers cannot deliver email when they are in the same routing group, then nothing will change when you split them up.

Therefore I presume that the servers are currently not in a routing group?

Active Directory sync would have nothing to do with this problem and would not indicate where the problem is as they use different technologies.

If you cannot telnet to the other servers on port 25 then you have to investigate what is blocking the traffic - antivirus and firewalls are the two most common causes. Inter-server traffic is transferred by SMTP, so if something is blocking port 25 then the traffic will not flow.

Simon.

xavier_amala

ASKER

Hey sembee

The port 25 i can telnet to corporate server but not to the other remote server.., i did windows security update on all 3 exchange server. Did this make any issue? please help me ASAP

Thanks

xavier_amala

ASKER

Hey let me explain the way i have 3 exchange server, Server A is in corporate , Server B and C are in remote locations. Server B and C can send email to Server A . But server B not able to send email to server C. Which is mails from remote site to remote site is not able to send, it was working fine. the only change was i updated windows security updates on 3 server.

Thanks

Sembee

The topology of the servers does not matter.
All the servers in this current topology must be able to communicate with each other on port 25. If they cannot then something is blocking that connection.
Firewalls, AV are the prime examples, also make sure that no one has tried to "secure" the servers by restricting what can connect to the SMTP virtual server.

Simon.

xavier_amala

ASKER

Hello All

is there is any way i can setup like, all the emails from remote site A hands to exchange server in corporate and remote site B also hands to Exchange server in corporate. This may fix this issue.

Any suggestions?

Thanks

Sembee

That is what routing groups will do.
However you need to discover why the machines will not communicate, because all routing groups don't fix communication problems - they just force traffic down a certain route.

Simon.