Проблема greylisting главная - облачные почтовые сервисы используют карусель из SMTP серверов, а для грейлистинга каждый из этих серверов - это новый сервер. В итоге - сообщение принимается после того как вся карусель SMTP серверов попадет в БД грейлистинга
Ниже пример приема такого письма.
Oct 3 16:11:19 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-ve1eur01on0124.outbound.protection.outlook.com, client_address=104.47.1.124, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 16:11:19 mx postfix/smtpd[11701]: NOQUEUE: reject: RCPT from mail-ve1eur01on0124.outbound.protection.outlook.com[104.47.1.124]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR01-VE1-obe.outbound.protection.outlook.com>
Oct 3 16:26:07 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr70127.outbound.protection.outlook.com, client_address=40.107.7.127, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 16:26:07 mx postfix/smtpd[13740]: NOQUEUE: reject: RCPT from mail-eopbgr70127.outbound.protection.outlook.com[40.107.7.127]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR04-HE1-obe.outbound.protection.outlook.com>
Oct 3 16:45:03 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr10139.outbound.protection.outlook.com, client_address=40.107.1.139, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 16:45:03 mx postfix/smtpd[13740]: NOQUEUE: reject: RCPT from mail-eopbgr10139.outbound.protection.outlook.com[40.107.1.139]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR02-HE1-obe.outbound.protection.outlook.com>
Oct 3 17:46:03 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-ve1eur01on0090.outbound.protection.outlook.com, client_address=104.47.1.90, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 17:46:03 mx postfix/smtpd[16052]: NOQUEUE: reject: RCPT from mail-ve1eur01on0090.outbound.protection.outlook.com[104.47.1.90]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR01-VE1-obe.outbound.protection.outlook.com>
Oct 3 18:46:03 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-he1eur01on0105.outbound.protection.outlook.com, client_address=104.47.0.105, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 18:46:03 mx postfix/smtpd[18316]: NOQUEUE: reject: RCPT from mail-he1eur01on0105.outbound.protection.outlook.com[104.47.0.105]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR01-HE1-obe.outbound.protection.outlook.com>
Oct 3 19:45:24 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr60128.outbound.protection.outlook.com, client_address=40.107.6.128, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 19:45:24 mx postfix/smtpd[19866]: NOQUEUE: reject: RCPT from mail-eopbgr60128.outbound.protection.outlook.com[40.107.6.128]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR04-DB3-obe.outbound.protection.outlook.com>
Oct 3 20:45:30 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr30128.outbound.protection.outlook.com, client_address=40.107.3.128, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 20:45:30 mx postfix/smtpd[21705]: NOQUEUE: reject: RCPT from mail-eopbgr30128.outbound.protection.outlook.com[40.107.3.128]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR03-AM5-obe.outbound.protection.outlook.com>
Oct 3 21:45:54 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr30139.outbound.protection.outlook.com, client_address=40.107.3.139, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 21:45:54 mx postfix/smtpd[23808]: NOQUEUE: reject: RCPT from mail-eopbgr30139.outbound.protection.outlook.com[40.107.3.139]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR03-AM5-obe.outbound.protection.outlook.com>
Oct 3 22:44:57 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr50090.outbound.protection.outlook.com, client_address=40.107.5.90, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 22:44:57 mx postfix/smtpd[24379]: NOQUEUE: reject: RCPT from mail-eopbgr50090.outbound.protection.outlook.com[40.107.5.90]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR03-VE1-obe.outbound.protection.outlook.com>
Oct 3 23:44:24 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr40109.outbound.protection.outlook.com, client_address=40.107.4.109, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 3 23:44:24 mx postfix/smtpd[26293]: NOQUEUE: reject: RCPT from mail-eopbgr40109.outbound.protection.outlook.com[40.107.4.109]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR03-DB5-obe.outbound.protection.outlook.com>
Oct 4 00:23:22 mx postgrey[1843]: action=greylist, reason=new, client_name=mail-eopbgr50103.outbound.protection.outlook.com, client_address=40.107.5.103, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
Oct 4 00:23:22 mx postfix/smtpd[27942]: NOQUEUE: reject: RCPT from mail-eopbgr50103.outbound.protection.outlook.com[40.107.5.103]: 450 4.2.0 <v.a@mydomain.ru>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/mydomain.ru.html; from=<m.k@remotedomain.ru> to=<v.a@mydomain.ru> proto=ESMTP helo=<EUR03-VE1-obe.outbound.protection.outlook.com>
Oct 4 00:39:08 mx postgrey[1843]: action=pass, reason=triplet found, delay=116119, client_name=mail-he1eur01on0090.outbound.protection.outlook.com, client_address=104.47.0.90, sender=m.k@remotedomain.ru, recipient=v.a@mydomain.ru
через 9 часов письмо упало в ящик
Выкинуть greylisting не вариант - завалят спамом выше крыши.
Просьба поделиться списком или ссылкой где есть список облачных почтовых сервисов для которых можно отключить грейлистинг.
Может что то продвинутое прикрутить?