Unable to replicate mail from internet

Suddenly today none of our remote users are able to replicate their mail from the internet. They can replicate all other databases w/o any problem, but when the replicate their mail db it fails (times out). If they vpn into the network they can replicate mail w/o problems.

Once they’ve vpn’d and replicated, they can then use the internet again. Our problem is that most users don’t have ability to vpn in.

What would cause the replication to fail on ONLY the mail databases. The mail files are on various mail servers, using various mail templates and none of the templates have changed.

Thanks a lot!

Subject: Unable to replicate mail from internet

really stupid question but has anything changed… firewall , server config etc?