16 Říj
KB5018410 = Outlook error 0x800CCC1A & Postfix SSL_accept:error
After installing the October update (KB5018410), customers started reporting to us that they were unable to send mail from Outlook using SMTP TLS (port 587). The email client only displays the error message: 0x800CCC1A and postfix writes in the log: Oct 16 18:21:39 mail postfix/submission/smtpd[719912]: connect from my.private.ip.[xxx.xxx.xxx.xxx] Oct 16 18:21:39 mail postfix/submission/smtpd[719912]: SSL_accept error […]