Meine Emails werden als SPAM massenhaft zurückgewiesen, warum?

Hallo,

Meine Emails werden von Yahoo, Gmail, BT und diversen anderen Mailservern als SPAM zurückgewiesen und kommen nicht durch.

Das begann letzte Woche, zuvor gab es kaum Probleme.

Einige Beispiele unten. Es war z.T. kaum möglich, Leute zu kontaktieren. Das Problem liegt serienweise auf der Seite der Empfänger.

Kann und sollte Mailbox.org da was tun?

Gruß,

Stephan

Beispiele:

This is the mail system at host smtp202.mailbox.org.

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

<email@btopenworld.com>: host

mout-p-202.mailbox.org[2001:67c:2050:0:465::202] said: 554 5.7.1 Spam

message rejected (in reply to end of DATA command)

This is the mail system at host smtp202.mailbox.org.

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

<email@harrow.gov.uk>: host

mout-p-101.mailbox.org[2001:67c:2050:0:465::101] said: 554 5.7.1 Spam

message rejected (in reply to end of DATA command)

und…so…weiter…