On 17.06.20 14:37, Patrick Proniewski wrote:
I have at work a Postfix infrastructure that sits between Internet and our Exchange servers. Postfix is used for MX and SMTP roles, ensure filtering with Amavisd/Clamav/etc. For some time now I notice that some messages, either originating from Internet or from internal servers are bounced when they arrive on the last hop: Exchange.
AFAIK this happens with messages that contain 8-bit headers.
Jun 17 12:34:20 postfix-mailgw/smtp[77347]: 57F56EB256: to=<login@exchg.domain>, orig_to=<userpart@domain>, relay=Exchange-VIP[Exchange-VIP]:25, delay=0.01, delays=0.01/0/0/0, dsn=5.6.7, status=bounced (SMTPUTF8 is required, but was not offered by host Exchange-VIP[Exchange-VIP])
I have this problem too a few times a day.
I'm suspecting something fishy with Amavisd, but I can totally rule out a mis-setting on my Postfix servers.
amavisd is outta here. apparently it _could_ reformat 8-bit headers but I'm not entirely sure if it should and if it supports 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. Microsoft dick is soft to do no harm
