Mailman and Postfix in Debian Unstable

[Lukas Ruf <ruf@rawip.org>]

Dear Siggy, dear All,

for any strange reason, postfix rejects emails sent from my
yahoo-Account to my muttprint@lists.lpr.ch mailinglist with the
following message:

<muttprint@lists.lpr.ch>:
80.254.163.99 does not like recipient.
Remote host said: 554 <muttprint@mail2.lpr.ch>: Relay access denied
Giving up on 80.254.163.99.

I do not understand why!  Until recently, it worked....

According to "/etc/mailman/postfix-to-mailman.py", I have
configured my postfix installation with

/etc/postfix/main.cf:
    relay_domains = lists.lpr.ch
    transport_maps = hash:/etc/postfix/transport.hash
    mailman_destination_recipient_limit = 1

/etc/postfix/transport.hash:
    lists.lpr.ch  mailman:

#> grep lists /etc/bind/db.lpr.ch
lists   IN      MX      5       mail2.lpr.ch.
lists           CNAME   mail2

euphrat:postfix!64> egrep '(MTA|DEB_LISTMASTER)' /etc/mailman/mm_cfg.py
# Uncomment this if you configured your MTA such that it
MTA=None   # Misnomer, suppresses alias output on newlist
DEB_LISTMASTER = 'postmaster@lpr.ch'
# MTA='Postfix'

I restarted and 'check'ed postfix and mailman several times -- the
same error happens.

Does anybody know what goes wrong?

Thanks for any help!

wbr,
Lukas
-- 
Lukas Ruf   <http://www.lpr.ch> | Ad Personam
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