>По идентификатору сообщения (A5E02470E) и его статусу (status=sent).
в логах входящую почту отфильтровуем а исходящая отправляется бывает по два-три раза пока не получится и в логах нужно отделить реально отправленные от попыток.
вот вид логов
Oct 23 21:44:48 anti postfix/smtpd[3126]: connect from unknown[200.195.86.84]
Oct 23 21:44:57 anti postfix/smtpd[3126]: NOQUEUE: reject: RCPT from unknown[200.195.86.84]: 450 Client host rejected: cannot find your hostname, [200.195.86.84]; from=<aberdeen@deportista.com> to=<bolotov@trais-shipping.com.ua> proto=SMTP helo=<200.195.86.84>
Oct 23 21:45:02 anti postfix/smtpd[3126]: lost connection after RCPT from unknown[200.195.86.84]
Oct 23 21:45:02 anti postfix/smtpd[3126]: disconnect from unknown[200.195.86.84]
Oct 23 21:45:08 anti postfix/smtpd[3119]: connect from frontend1.aha.ru[195.2.83.141]
Oct 23 21:45:08 anti postfix/smtpd[3119]: A6C3438403A: client=frontend1.aha.ru[195.2.83.141]
Oct 23 21:45:09 anti postfix/cleanup[3127]: A6C3438403A: message-id=<list-236658661@backend2.aha.ru>
Oct 23 21:45:09 anti postfix/qmgr[2548]: A6C3438403A: from=<pc-3000user-report@acelab.ru>, size=2418, nrcpt=1 (queue active)
Oct 23 21:45:09 anti clamsmtpd: 100013: accepted connection from: 127.0.0.1
Oct 23 21:45:09 anti postfix/smtpd[3130]: warning: dict_nis_init: NIS domain name not set - NIS lookups disabled
Oct 23 21:45:09 anti postfix/smtpd[3130]: connect from localhost.localdomain[127.0.0.1]
Oct 23 21:45:09 anti postfix/smtpd[3130]: 2787838403B: client=frontend1.aha.ru[195.2.83.141]
Oct 23 21:45:09 anti postfix/cleanup[3127]: 2787838403B: message-id=<list-236658661@backend2.aha.ru>
Oct 23 21:45:09 anti postfix/smtpd[3119]: disconnect from frontend1.aha.ru[195.2.83.141]
Oct 23 21:45:09 anti postfix/qmgr[2548]: 2787838403B: from=<pc-3000user-report@acelab.ru>, size=2655, nrcpt=1 (queue active)
Oct 23 21:45:09 anti clamsmtpd: 100013: from=pc-3000user-report@acelab.ru, to=pc3000@desta.com.ua, status=CLEAN
Oct 23 21:45:09 anti postfix/smtp[3128]: A6C3438403A: to=<pc3000@desta.com.ua>, relay=127.0.0.1[127.0.0.1], delay=1, status=sent (250 Ok: queued as 2787838403B)
Oct 23 21:45:09 anti postfix/qmgr[2548]: A6C3438403A: removed
Oct 23 21:45:09 anti postfix/smtpd[3130]: disconnect from localhost.localdomain[127.0.0.1]
Oct 23 21:45:09 anti postfix/smtp[3132]: 2787838403B: to=<pc3000@desta.com.ua>, relay=192.168.4.44[192.168.4.44], delay=0, status=sent (250 2.6.0 Transaction Ok (00C0B831@mail.trais.com.ua))
Oct 23 21:45:09 anti postfix/qmgr[2548]: 2787838403B: removed
Oct 23 21:46:19 anti postfix/smtpd[3125]: connect from smtp6.wanadoo.fr[193.252.22.25]
Oct 23 21:46:19 anti postfix/smtpd[3125]: NOQUEUE: reject: RCPT from smtp6.wanadoo.fr[193.252.22.25]: 450 <smtp6.wanadoo.fr[193.252.22.25]>: Client host rejected: Policy Rejection: Please try later.; from=<evsobol@mail.ru> to=<yan.fuks@trais.com.ua> proto=ESMTP helo=<smtp6.wanadoo.fr>
Oct 23 21:46:19 anti postfix/smtpd[3125]: disconnect from smtp6.wanadoo.fr[193.252.22.25]
Oct 23 21:46:23 anti postfix/smtpd[3126]: connect from unknown[68.206.25.101]
Oct 23 21:46:26 anti postfix/smtpd[3126]: NOQUEUE: reject: RCPT from unknown[68.206.25.101]: 450 Client host rejected: cannot find your hostname, [68.206.25.101]; from=<affectionate@start.com.au> to=<borisenkoblek@trais.ilyichevsk.odessa.ua> proto=SMTP helo=<cpe-68-206-25-101.houston.res.rr.com>
Oct 23 21:46:26 anti postfix/smtpd[3126]: lost connection after RCPT from unknown[68.206.25.101]