hallo allerseits, ich erhalte auf meiner t-online-emailadresse mails von hotmail, aber kann ihnen nicht antworten (mailer daemon)
offenbar liegt das Problem bei euch? das Problem liegt seit Montag, 16.06.2025 vor.
danke!
This is the mail system at host mailout03.t-online.de.I'm sorry to have to inform you that your message could notbe delivered to one or more recipients. It's attached below.For further assistance, please send mail to postmaster.If you do so, please include this problem report. You candelete your own text from the attached returned message.The mail system<..emailadresse..>: hosthotmail-com.olc.protection.outlook.com[52.101.73.20] said: 550 5.7.515Access denied, sending domain T-ONLINE.DE doesn't meet the requiredauthentication level. The sender's domain in the 5322.From address doesn'tmeet the authentication requirements defined for the sender.
