Hi, we're experiencing an error where one user on our server is getting a 550 error message, unable to send out mail. It seems to be only affecting his domain, as it can be duplicated from multiple machines, but other domains can send out mail without problems.
The error we're seeing in /var/log/exim_mainlog is:
2003-09-08 13:11:25 H=(c481242a) [22.214.171.124] sender verify fail for <firstname.lastname@example.org>:
2003-09-08 13:11:25 H=(c481242a) [126.96.36.199] F=<email@example.com> rejected RCPT <firstname.lastname@example.org>: Sender verify failed
I searched this forum, but all other instances of the sender verify failed error seem to have an "unroutable domain" tagged onto the first line, while the error I'm seeing doesn't offer any further clarification. I can send mail to that address from other email addresses on the server.
So far we've tried restarting exim/antirelayd/cppop to no avail. The user is also checking his POP3 box before trying to send mail. Any suggestions would be greatly appreciated.
Thanks a lot!
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