A few months ago, I set up a Barracuda Spam Firewall to help manage the loads of spam my mail server was getting.

I created an MX record for my domain to point to the Barracuda. Everything worked great.

Except that there was still some spam coming in because the spammers were sending directly to the SMTP port on my server, and ignoring the MX record.

OK, so I changed my mail server's SMTP port to a non-standard port, and reconfigured the Barracuda to send to that port. Everything worked great. Users had to reconfigure their SMTP settings in their mail clients, but it was all cleared up in a day or two and the spam load dropped to pretty much zero.

Except said users can no longer send mail through Squirrelmail. Click the "Send" button and the error is "Connection refused/Server replied: 61".

Yes, I reconfigured Squirrelmail's SMTP settings to use the new port. No, I didn't change anything else...no TLS, etc.

Anyone have any ideas? I've searched online, scoured the archives, and haven't seen anything like this.

-- David Ramsey


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