I've seen this caused by 2 things: 1) either SMTP Authentication is turned off, 2) the Antivirus software (usually Norton) was updated and the system needs to be rebooted.
Just my experience. Troy D. Hilton Serveon, Inc. [EMAIL PROTECTED] 302-529-8640 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Ulrich Sent: Friday, October 07, 2005 10:25 AM To: [email protected] Subject: [IMail Forum] Strange problem with 550 Messages We have a user who is getting 550 messages (ie. receipient is not hosted, no relay allowed). The user is a legitimate user, the domain is configured right. He can receive email on the account (I've seen it) and it is coming from outside (non hosted) users. However, if he tries to email out, he gets a 550. It shouldn't be an ID or password issue, because he can check mail (which requires user authentication). Has anyone seen this? Any suggestions? Thanks 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/
