http://www.postfix.org/postconf.5.html#smtpd_helo_restrictions
I would mean this should do that and the permits are needed because we do not want that authenticated endusers are rejected smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_helo_hostname Am 03.03.2011 11:01, schrieb Erik de Castro Lopo: > Hi all, > > I'm running postfix 2.7.1 from Debian testing. > > I'm getting quite a bit of spam from machines in places like Vietnam > whose IP addresses resolve to localhost. > > For example: > > postfix/smtpd[1427]: warning: 117.4.33.231: address not listed for hostname > localhost > postfix/smtpd[1427]: connect from unknown[117.4.33.231] > policyd-spf[1508]: None; identity=helo; client-ip=117.4.33.231; > helo=localhost; envelope-from=xx...@aguaclara.org; > receiver=xx...@mega-nerd.com > policyd-spf[1508]: None; identity=mailfrom; client-ip=117.4.33.231; > helo=localhost; envelope-from=xx...@aguaclara.org; > receiver=xx...@mega-nerd.com > postfix/smtpd[1402]: 7D08B106DD6: client=unknown[117.4.33.231] > postfix/cleanup[1510]: 7D08B106DD6: > message-id=<e1pv4ra-0000xi...@aguaclara.org> > postfix/qmgr[1395]: 7D08B106DD6: from=<xx...@aguaclara.org>, size=4971, > nrcpt=1 (queue active) > postfix/local[1511]: 7D08B106DD6: to=<xx...@mega-nerd.com>, relay=local, > delay=1.3, delays=1.2/0/0/0.06, dsn=2.0.0, status=sent (delivered to command: > /usr/bin/procmail) > postfix/qmgr[1395]: 7D08B106DD6: removed > > Is there a way to detect and reject any email from IP addresses > falsly claiming to be localhost? > > Cheers, > Erik -- Mit besten Grüßen, Reindl Harald the lounge interactive design GmbH A-1060 Vienna, Hofmühlgasse 17 CTO / software-development / cms-solutions p: +43 (1) 595 3999 33, m: +43 (676) 40 221 40 icq: 154546673, http://www.thelounge.net/
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