Well tonight I encountered an interesting Problem. My Apple Mail refused to connect to my mailserver. At first I thought maybe my security constraints are the cause for this but I couldn’t be more wrong. After some digging in the logs which continously showed the following
Nov 5 19:34:59 juno postfix/submission/smtpd[903]: warning: dont-try-me.hsi14.unitymediagroup.de[1.2.3.4]: SASL LOGIN authentication aborted Nov 5 19:35:00 juno postfix/submission/smtpd[903]: warning: dont-try-me.hsi14.unitymediagroup.de[1.2.3.4]: SASL LOGIN authentication aborted Nov 5 19:35:00 juno postfix/submission/smtpd[903]: warning: dont-try-me.hsi14.unitymediagroup.de[1.2.3.4]: SASL LOGIN authentication aborted
I rand some google searches and found out that the main problem is the gmail XOAuth2 mechanism. If you have multiple Accounts registered in Apple Mail with the the checkbox enabled for „Automatically detect and maintain account settings“ the program somehow thinks every mailserver uses XOAuth2. Well after unchecking this for incomming (IMAP) and outgoing (smtp) it worked again without any change required on the corresponding mailserver.
WHY YOU NO TEST YOUR FUCKING MAILSHIT APPLE?