Hallo, seit mehreren Tagen ist es nicht mehr möglich, Emails an einen hotmail.com zu senden:

 

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.

1. Email: This is the mail system at host mailout08.t-online.de.

<emailempfänger wg. privatsphäre gelöscht>: host
    hotmail-com.olc.protection.outlook.com[104.47.44.xx] said: 550 5.7.1
    Unfortunately, messages from [194.25.134.20] <--???? nicht meine IP weren't sent. Please contact
    your Internet service provider since part of their network is on our block
    list (S3150). You can also refer your provider to
    http://mail.live.com/mail/troubleshooting.aspx#errors.
    [SN1NAM04FT006.eop-NAM04.prod.protection.outlook.com] (in reply to MAIL
    FROM command)

 

2. Email: This is the mail system at host mailout06.t-online.de.

<empfänger wg. Privatsphäre gelöscht>: delivery temporarily suspended: lost connection with
    hotmail-com.olc.protection.outlook.com[104.47.4.33] while sending RCPT TO

 

3. Email: This is the mail system at host mailout10.t-online.de.
<xyz@hotmail.com>: host hotmail-com.olc.protection.outlook.com[104.47.9.33]
    said: 550 5.7.1 Unfortunately, messages from [194.25.134.21] weren't sent.
    Please contact your Internet service provider since part of their network
    is on our block list (S3150). You can also refer your provider to
    http://mail.live.com/mail/troubleshooting.aspx#errors.
    [VE1EUR03FT054.eop-EUR03.prod.protection.outlook.com] (in reply to MAIL
    FROM command)

 

Vom Hotmail Support bekam ich nun folgende Mitteilung:

IP (x92.x68.2.xxx) (MEINE IP!!!) was blocked by Microsoft Hotmail because it is part of the IPs space reserved to Internet Assigned Numbers Authority - IANA -. These IPs are not usable for use on the Internet. You can find more information about the reserved IP space is available through the following document RFC: http://tools.ietf.org/html/rfc5735#page-3

 

It is likely that your organization is making your shipments through mail servers using a different IP address. Please provide us with a valid IP and submit it using this link:  http://go.microsoft.com/fwlink/?LinkID=614866&clcid to investigate your particular case.

 

Ich bitte um Aufklärung.

 

Herzlichen Dank,

eine Privatperson