SMTP Relay Authentication Problem

[jrl237]

I've been using IMail for about 5 years. I recently upgraded an IMail 7 server to IMail 8.15. I replaced the computer that IMail was running at the same time.

The upgrade was fairly easy, and everything seems to be working fine, except I can no longer send mail to outside email addresses from offsite.

I've set it to No Relay and cleared Disable SMTP Auth Reporting. I still get "550 not local host not-any.com, not a gateway"

I've tried Relay for Addresses without entering any addresses, but that didn't work either.

It does work if I set it to Relay Mail for Anyone, but that's not really an option.

Anyone know what I might be doing wrong? Any troubleshooting I could do that might point me in the right direction?

Any help would be greatly appreciated,

Thanks,

JRL

 

[jrl237]

Looking at my log files, here's what I see every time I try to send email with No Relay:

20050528 123615 127.0.0.1 SMTPD (ba1f000e018c1685) [67.161.208.56] RCPT TO: <jrl237@yahoo.com>
20050528 123615 127.0.0.1 SMTPD (ba1f000e018c1685) [67.161.208.56] ERR mail.mydomain.com invalid user <jrl237@yahoo.com

I don't get it.

I've now got relay set to Relay for Local Users Only, but I know that can be spoofed. I'd really like to get SMTP authentication working, but I can't make it work.

 

[BudTheGrey]

In the SMTP service "security" tab, choose "relay mail for" then click the addresses button, and add the IP addresses for your internal users. This is much harder to spoof.

Try using Webmail to send an outbound message. This wil test both the user/password combo and the relay settings.

Is is possible your user passwords got corrupted?

 

[jrl237]

My users are dialing up from all over, so Relay Mail For didn't seem like much of an option. I wanted to use No Relay and force everyone to authenticate.

Web mail worked fine for everyone, so no password corruption.

The problem turned out to be with my Cisco PIX firewall. It had a commend (fixup SMTP) that was breaking SMTP authentication from outside. As soon as I turned that off (no fixup protocol smtp 25) updated the configuration (write mem) and restarted the PIX (reload) I was able to change the IMail relay option to No Relay and my outside users were able to connect, authenticate, and send mail to anywhere. Problem solved.

 

[BudTheGrey]

Coo that you got it solved; I didn't realize that a PIX was involved.