I can send and receive mail using email@example.com, but system generated emails such as firstname.lastname@example.org bounce backup with an error:
May 1 03:14:52 mail postfix/smtp: 23CA4BD6B40: to=
, relay=none, delay=0.01, delays=0/0/0/0, dsn=5.4.6, status=bounced (mail for mail.example.com loops back to myself)
How do I fix this error?
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