Hi To give you some feedback on the issue - we are still on the trial and error part to narrow down what exactly in the emails causes them to get rejected.
It looks like it's not only the string "Rechnung" in the content or attachment name as sending the same body and pdf attachment via another tool did not cause them to get rejected. So we started comparing email headers, encodings, etc. At the moment, it strangely looks like we have narrowed it down to the cause most contributing to emails being rejected, just being the Message-ID containing a dash (- sign), despite this IMHO being RFC compliant. It looks since we have altered the way how the Message-ID is generated, replacing the dash by a dot, emails get delivered to icloud.com recipients. -- Mit freundlichen Grüssen -Benoît Panizzon- @ HomeOffice und normal erreichbar -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________ _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
