[Mailman-Users] Problem with mailman-loop address

[ratatouille]

Hello!

Using mailman 2.1.17

Today I found this in the logfile:

Jun  1 05:16:16 bitmachine1 postfix/qmgr[4215]: 3070F181214: from=<mailman-loop at listen.bitcorner.de>, size=6027, nrcpt=1 (queue active)
Jun  1 05:16:16 bitmachine1 postfix/smtpd[3659]: proxy-accept: END-OF-MESSAGE: 250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 3070F181214; from=<mailman-loop at listen.bitcorner.de> to=<andreas at bitcorner.der> proto=ESMTP helo=<bitmachine1.bitcorner.de>
Jun  1 05:16:16 bitmachine1 postfix/lmtp[3687]: 599AE1811EF: to=<mailman-loop at listen.bitcorner.de>, relay=mail.bitcorner.de[private/dovecot-lmtp], delay=0.05, delays=0.02/0/0.03/0.01, dsn=5.1.1, status=bounced (host mail.bitcorner.de[private/dovecot-lmtp] said: 550 5.1.1 <mailman-loop at listen.bitcorner.de> User doesn't exist: mailman-loop at listen.bitcorner.de (in reply to RCPT TO command)

In /var/lib/mailman/data/aliases there is no alias like mailman-loop.

What's wrong here and how do I fix this?

Kind regards

  Andreas