MS Exchange 2003 Standard SP2
MS Windows Server 2003 Standard SP2
Barracuda 300 mail Appliance (Smart Host for Exchange)
Just started yesterday. When I attempt to send mail over 10MB the "remote host drops the connection" according to exchange queue. The SMTP logs the open and closing of the connection withing 1 second.
Restarted SMTP Services
Verfied message size & Session size restrictions (30MB for size, 100MB for session on Exchange, and 100MB size on Barracuda)
Turned logging all the way up in exchange, no help.
I have removed the Barracuda as the smarthost and the mail does send after that.
Logs on Barracuda supposedly do not show any SMTP connection attempting to send the mail. Exchange logs show a connect and ehlo, then nothing.
Barracuda says it Exchange (I don't think so).
I am about to try a reboot, if I can't figure anything else out. The server has been running for almost 4 months without a reboot. (pretty good for a windows box).
Thanks for any help.