[Mailman-Users] User doesn't exist

[KevinChen]

HI，all:  
       I installed the mailman on a debian x32 VPS.My MTA is postfix.The mailman running is successful. So, i create a list name is mailman. This is list has two members. When i send mail to this list, i got an error.

Apr 20 07:55:27 xapz-server postfix/lmtp[16950]: CA079822E6: to=<|/var/lib/mailman/mail/mailman post mainman at xapz.cn>, orig_to=<mainman at xapz.cn>, relay=mail.xapz.cn[private/dovecot-lmtp], delay=1.1, delays=1.1/0.01/0/0.01, dsn=5.1.1, status=bounced (host mail.xapz.cn[private/dovecot-lmtp] said: 550 5.1.1 <|/var/lib/mailman/mail/mailman post mainman at xapz.cn> User doesn't exist: |/var/lib/mailman/mail/mailman post mainman at xapz.cn (in reply to RCPT TO command))

mailman has two arguments post and mailman at xapz.cn, Did the list name without that domain?And how to resolve this problem?

Thanks   

--  
KevinChen
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