Maybe they have just started eating their own dog food V2.0 at MS? ;-> SCNR.
Best, -C. > Am 15.12.2023 um 11:37 schrieb Laurent S. via mailop <[email protected]>: > > It seems Microsoft made very recently a change. Since then, we get a > whole bunch of reject with this message: > >> 554 5.6.211 Invalid MIME Content: Single text value size (32820) > exceeded allowed maximum (32768) for the > 'X-Microsoft-Antispam-Message-Info-Original' header. > > The company I work for does some e-mail handling where our clients would > keep their MX at microsoft and route some inbound mails through our > infra by connectors. > > What is stupid is that the header that causes the reject upon reinject > is written BY THEM! How about not writing such crazily long report on a > single header? > > We are now implementing a reject on the same header length for this > service, but I suppose our customer will realize soon that they are > missing some mails and will, as usual, put the blame on us instead of > microsoft. > > Regards, > Laurent _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
