On 2022-08-09 at 20:20:36 UTC-0400 (Wed, 10 Aug 2022 01:20:36 +0100) Jeremy Harris via Exim-users <j...@wizmail.org> is rumored to have said:
Tricky to guess at. Turn off more features, I guess. You already tried chunking. Next would be fastopen, then pipelining. However, given it was right after all the data (even in non-chunking) one has to wonder if it's a content-check of theirs going wrong.
This sounds a lot like the problem of some 'transparent' middleboxes that try to filter SMTP but get confused when <crlf>.<crlf> gets split between packets.
-- Bill Cole b...@scconsult.com or billc...@apache.org (AKA @grumpybozo and many *@billmail.scconsult.com addresses) Not Currently Available For Hire -- ## 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/
