Thanks for the advice, I'll try to figure it out with amavis when I have time!
--- Исходное сообщение --- От кого: "Matus UHLAR - fantomas" <uh...@fantomas.sk> Дата: 15 июня 2021, 13:19:19 On 15.06.21 12:14, yuryb wrote: >My content filter adds a disclaimer to the email, and then sends it using >sendmail: >/usr/sbin/sendmail -oi "$@" < email_with_disclaimer.$$ I can recommend feeding the mail back using LMTP, using port where receive_override_options=no_address_mappings is in use. Perhaps you could try adding disclaimer with amavis or similar filter that can do LMTP (and add disclaimers per-recipient). >But, as I wrote earlier, I completely disabled the content filter, and sent > emails in different ways. And I saw that disabling the filter did not > change anything. I suspect the problem is with fetchmail, because before > fetchmail picks up the email, it’s in the mailbox of the email provider, > and it’s already duplicated! your provider apparently delivers e-mail to mailbox once per recipient. fetchmail should deliver such mail only to recipient in X-Envelope-To: header or other header your ISP uses for delivering to multidrop mailboxes. However, yes - if you already receive the same mail multiple times, you only can try to deduplicate it after that. -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. M$ Win's are shit, do not use it !