Seit ein paar Tagen ist ein Emailversand via AOL nicht mehr möglich. Fehlermeldung v. Mailer Daemon:

"This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error. The following address(es)
failed:

felix1405li@aol.com:
SMTP error from remote server for TEXT command, host: mailin-03.mx.aol.com (152.163.0.67) reason: 521 5.2.1 : (DMARC:AOL) This message failed DMARC Evaluation for an AOL D
omain. For more information please visit https://postmaster-blog.aol.co
m/2014/04/22/aol-mail-updates-dmarc-policy-to-reject/"

Wer weiss Rat?