I received the following with returned mail and was wondering why mail coming through comcast is blacklisted.

Here is the error message:


Your message cannot be delivered to the following recipients:

Recipient address: serge@hostony.com
Reason: Remote SMTP server has rejected address
Diagnostic code: smtp;550 mail from 24.153.64.116 rejected: administrative prohibition (host is blacklisted)
Remote system: dns;hostony.com (TCP|172.20.1.54|43290|209.51.138.26|25) (server1.fastbighost.com ESMTP Exim 3.36 #1 Fri, 02 May 2003 19:10:07 -0700 )

Reporting-MTA: dns;mtaout04.icomcast.net (tcp-daemon)

Ip address of your ISP smtp server is blocklisted by spamcop.net.
Apparently somebody of comcast customer sent flood of unsolicited mail through their smtp server.

More info:
http://spamcop.net/w3m?action=checkblock&i...p=24.153.64.116

Try to send mail through the different smtp or contact your ISP support.

Oh, I see. Thanks for the information.

Tim