Mail server fails to send Email from Bamboo: dsn=5.6.0, stat=Data format error
Platform notice: Server and Data Center only. This article only applies to Atlassian products on the Server and Data Center platforms.
Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Problem
When sending notification emails from Bamboo, the mail is dispatched properly to the mail server, but the email is not delivered and the following appears in the mail server log:
May 5 21:02:40 <hostname> sendmail[41797]: v45L2eFe041797: from=<from address>, size=521, class="-60", nrcpts=1, msgid=<message_id>, proto=ESMTP, daemon=MTA, at [127.0.0.1]
May 5 21:02:41 <hostname> sendmail[41799]: v45L2eFe041797: to=<recipient>, delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=228521, relay=<relay_address>. [relay_ip], dsn=5.6.0, stat=Data format error
May 5 21:02:41 <hostname> sendmail[41799]: v45L2eFe041797: v45L2fFe041799: DSN: Data format errorCause
This issue occurs because the receiving server requires a real email address on a domain that it is able to look up.
Resolution
Please set a real, valid, email address as the From address in the Bamboo Mail server configuration.