On Thu, Jul 16, 2020 at 05:19:52PM +0200, Kai Bojens via Exim-users wrote: > Scenario: I want to archive customer e-mail. Right now I am sending > copies through a router via "manualroute" and "unseen" which works > perfectly fine. > > The only problem occurs when mails have multiple recipients like Bcc. > The recipient of the mails must be rewritten to the same address (i.e. > foo...@archive.tld) for the mailarchive to work – I use headers_add for > adding "X-Envelope-To:" in order for the mail archive to distinguish > them later.
You are doing something strange: get original mail with several addresses and make several copies with a single-address X-Envelope-To: header. Why so? Put all recipients into X-Envelope-To: and write copy into archive. Such approach saves file space. > The problem is that Exim recognizes these mails as the same and either > sends one mail with multiple recipients or (when I add "max_rcpt = 1") > sends multiple mails - but these mails are all the same, they only have > the "X-Envelope-To:" of the latest redirection. > > Debugging the process shows: > > "[duplicate, would not be delivered]" > > As far as I understand this is expected behaviour and only within pipes > mails are treated differently. > > tl;dr: how can I force Exim to actually create single and unique mails > instead of just ignoring duplicates? Unique mails MUST have unique Message-Id's. Some mail storage systems (Cyrus, for example) remove duplicates by message-id automatically. Nevetheless, you can pipe mail to you custom script written to create several files, with the only difference in X-Envelope-To: header, but for me it looks ridiculous. -- Eugene Berdnikov -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
