Ich bekomme sehr häufig gesandte Mails zurück (meist bei Versand an ( @hotmail.com). Da kommt dann folgende Meldung:

"This is the mail system at host mailout01.t-online.de.

I'm sorry to have to inform you that your message could not be 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 can delete your own text from the attached returned message.

                   The mail system

< xxxxxxx @hotmail.com >: host

    hotmail-com.olc.protection.outlook.com[104.47.44.33] said: 550 5.7.1

    Unfortunately, messages from [194.25.134.80] weren't sent. Please contact

    your Internet service provider since part of their network is on our block

    list (S3140). You can also refer your provider to

    http://mail.live.com/mail/troubleshooting.aspx#errors.

    [SN1NAM04FT009.eop-NAM04.prod.protection.outlook.com] (in reply to MAIL

    FROM command)

Woran kann das liegen, wie kann man das lösen?

Wenn ich z.B. von meiner @web.de sende passierte sowas noch nie.

Gruß Achim

Anmerkung von Telekom hilft:

E-Mail-Adresse editiert