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Site to Site VPN Mail between sites not flowing

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.

3 REPLIES

Re: Site to Site VPN Mail between sites not flowing

post the configuration of both sides.

Re: Site to Site VPN Mail between sites not flowing

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.

Cisco Employee

Re: Site to Site VPN Mail between sites not flowing

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.

Regards,

Arul

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