Im getting a lot of of “Undelivered Mail Returned to Sender” tickets being generated from my RT server.
Here is the info:
This is the mail system at host my.rt.server.com
I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
user1@myitdomain.com: host smtp.host.com[IP.ADDRESS] said: 550
5.7.60 SMTP; Client does not have permissions to send as this sender
[BN7PR07MB4644.hosted.email.com] (in reply to end of DATA command)
user2@myitdomain.com: host smtp.host.com[IP.ADDRESS] said:
550 5.7.60 SMTP; Client does not have permissions to send as this sender
[BN7PR07MB4644.hosted.email.com] (in reply to end of DATA command)
Is there something in RT that I need to add to the users to grant them access? Is this an issue with postfix?
Any help is appreciated.
Thanks in advance.