Site to Site VPN Mail between sites not flowing

Unanswered Question
Sep 26th, 2008

Have a site to site tunnel between routers and the mail between the sites won't flow both are exchange servers in the same routing group. I have to tunnel between the sites wide open IP and still nothing.

I have this problem too.
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Danilo Dy Mon, 09/29/2008 - 02:39

Do you have ACL in the interface where VPN use to establish connection? Try removing the interface ACL, if it works, add the IP Address of the VPN to the permit entries of the interface ACL, re-apply the ACL to the interface.

ajagadee Tue, 09/30/2008 - 12:45

Hello Bob,

Couple of things you can..

1. If ICMP is permitted, ping between the mail servers and see if they can see each other through the tunnel.

2. Make sure that SMTP Ports are not blocked anywhere between the servers.

3. Configure Capture command on the mail traffic and see if you the packets are making to the ASAs.



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