Hallo zusammen,

ich habe zwei verschiedene email Kontakte bei @SFR.fr, bei beiden ist es nicht möglich, eine t-online mail zuzustellen. 

Fehlermeldung:

This is the mail system at host mailout02.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

<xxxxxs@sfr.fr>: host smtp-in.sfr.fr[xx.17.xx8.xx3] said: 550 5.7.1 Email
    rejected per SPAM policy (in reply to end of DATA command)

Was tun? Es nervt mich allmählich...