the following is the log from my gateway to a subdomain; there are lot <> sender mails are going; is it backscatter?; some are rejected on the basis of header-checks; the owner of the subdomain has got a mail server; how can i prevent this
Jul 3 10:25:28 relay2 postfix/cleanup[13619]: 60F3A2122D: reject: header Content-Type: text/plain; charset="koi8-u" from mai lhost.council.net[195.202.154.33]; from=<> to=<p...@abc.com> proto=ESMTP helo=<ecenterx08.ecenter.ecenter2008>: 5.7.1 NotR eadable2 Jul 3 10:26:04 relay2 postfix/smtp[13797]: 359D42122B: to=<p...@abc.com>, relay=192.168.21.12[192.168.21.12]:25, delay=0. 09, delays=0.08/0/0/0.01, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 69C482293E7) Jul 3 10:26:04 relay2 amavis[13858]: (13858-06) Passed CLEAN, [132.208.250.43] <> -> <p...@abc.com>, Message-ID: <0KM700I 076nik...@courriel2.sitel.uqam.ca>, mail_id: pvzt40i0g0xP, Hits: -2.598, size: 5216, queued_as: 359D42122B, 5242 ms Jul 3 10:26:04 relay2 postfix/smtp[13836]: C2F6D2122A: to=<p...@abc.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=8.1, de lays=2.8/0/0/5.2, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 359D42122B) guidance appreciated
