Настроил почтовый релей по статье exim+exchange - http://www.lissyara.su/?id=1453, до этого этот сервер неимел внешнего dns, но всегда был с белым IP. Буквально через пару часов стал замечать в очереди левые письма, в частности сегодня:
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5.5K 1LXU9f-000Gwk-Iw <>
hardinessg0@caleffi.ru
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Feb 12 07:29:48 asterisk exim[64890]: [64890] no IP address found for host hn.kd.ny.adsl (during SMTP connection from (hn.kd.ny.adsl) [125.42.67.197]:1160 I=[80.249.231.163]:25)
Feb 12 07:29:48 asterisk exim[64890]: [64890] STAGE6: ACL m0 set = 70 for host= [125.42.67.197] with HELO=hn.kd.ny.adsl - many big sender address [hardinessg0@caleffi.ru]
Feb 12 07:29:48 asterisk exim[64890]: [64890] "STAGE10: ACL m0 set = 130 for host= [125.42.67.197] with HELO=hn.kd.ny.adsl - dialup, ppp & etc..."
Feb 12 07:29:48 asterisk exim[64890]: [64890] non-existent domain in HELO - 'hn.kd.ny.adsl' setting acl_m0 = 280
Feb 12 07:29:48 asterisk exim[64890]: [64890] Delay 28s (spam counter = 280; white host = 0) for [125.42.67.197] with HELO=hn.kd.ny.adsl. Mail from hardinessg0@caleffi.ru to infonn@telesens.ru.
Feb 12 07:30:21 asterisk exim[64890]: [64890] 1LXU9R-000Gsc-Jp <= hardinessg0@caleffi.ru H=(hn.kd.ny.adsl) [125.42.67.197]:1160 I=[80.249.231.163]:25 P=esmtp S=4618 id=029655504.96709832255707@caleffi.ru T="\363e\322\311\301\314\331 - \304e\333\305\327\314\305 \316e \316a\312\324\311" from <hardinessg0@caleffi.ru> for infonn@telesens.ru
Feb 12 07:30:31 asterisk exim[65121]: [65121] 1LXU9R-000Gsc-Jp ** infonn@telesens.ru F=<hardinessg0@caleffi.ru> P=<hardinessg0@caleffi.ru> R=exchange_router T=remote_smtp: SMTP error from remote mail server after RCPT TO:<infonn@telesens.ru>: host 10.4.2.86 [10.4.2.86]: 550 5.1.1 User unknown
Feb 12 07:30:31 asterisk exim[65146]: [65146] 1LXU9f-000Gwk-Iw <= <> R=1LXU9R-000Gsc-Jp U=mailnull P=local S=5665 T="Mail delivery failed: returning message to sender" from <> for hardinessg0@caleffi.ru
Feb 12 07:30:40 asterisk exim[65149]: [65149] 1LXU9f-000Gwk-Iw SMTP error from remote mail server after RCPT TO:<hardinessg0@caleffi.ru>: host mxs.valuehost.ru [217.112.42.22]: 450 4.7.1 Client host rejected: cannot find your hostname, [80.249.231.163]