You need to turn off the fixup protocol for smtp on cisco routers... no fixup protocol smtp 25
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Rich Garabedian Sent: Wednesday, December 04, 2002 10:35 AM To: [EMAIL PROTECTED] Subject: [IMail Forum] SMTP AUTH Troubles Hi, I'm trying to track down why SMTP auth seems not to be working. I've poured through the email archives and I think I've identified the problem, but in all honesty I'm a software guy and the inner workings of mail servers are extremely new to me. After researching this today, I have just enough knowledge to be dangerous and I'm sure some of newbie assumptions are incorrect. Any help is greatly appreciated. Problem: When outside the network, emails cannot be sent via IMail to outside email recipients. When attempting to do so, Outlook responds with something like: 550 unknown host, not a gateway Configuration: Outlook is configured to require authentication for outgoing mail. IMail is set-up with "Relay Mail For", and a single IP address is specified. Also, the "Disable" checkboxes on the SMTP Security page are NOT checked. Logs: (Actual domain names and ips changed/removed) It looks like IMAIL is responding correctly to EHLO commands: 20021203 131321 127.0.0.1 SMTP (880) >EHLO mail.server.com 20021203 131322 127.0.0.1 SMTP (880) 250-ntserver.server.com Hello [mail.server.com] 20021203 131322 127.0.0.1 SMTP (880) 250-XEXCH50 20021203 131322 127.0.0.1 SMTP (880) 250-HELP 20021203 131322 127.0.0.1 SMTP (880) 250-ETRN 20021203 131322 127.0.0.1 SMTP (880) 250-DSN 20021203 131322 127.0.0.1 SMTP (880) 250-SIZE 0 20021203 131322 127.0.0.1 SMTP (880) 250-AUTH LOGIN 20021203 131322 127.0.0.1 SMTP (880) 250 AUTH=LOGIN However, I found what I think is log data that shows an attempt to send email from outside the network and it does not appear as though IMail is getting the EHLO command: 20021203 115017 127.0.0.1 SMTPD (3192012E) [24.52.173.121] HELO RICHLAPTOP 20021203 115017 127.0.0.1 SMTPD (3192012E) [24.52.173.121] MAIL FROM: <[EMAIL PROTECTED]> 20021203 115017 127.0.0.1 SMTPD (3192012E) [24.52.173.121] RCPT TO: <[EMAIL PROTECTED]> 20021203 115017 127.0.0.1 SMTPD (3192012E) [24.52.173.121] ERR mail.server.com invalid user <[EMAIL PROTECTED]> I've seen some references in the mail archives to firewalls stripping the Extended helo from request. We use a Cisco firewall ... could this be happening to us? Is there an easy way to verify? Rich To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
