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Ref: PBL1523068

174.48.0.0/12 is listed on the Policy Block List (PBL)




Outbound Email Policy of Comcast for this IP range:

Email sent by Comcast subscribers using a mail program such as Outlook Express are required to send the email through Comcast. To insure your mail program is properly configured, please visit http://www.comcast.net/help/faq/index.jsp?faq=Email117481. If you are a Comcast Commercial Services customer and need support, please contact support_biz@cable.comcast.com



Removal Procedure

Removal of IP addresses within this range from the PBL is not allowed by the netblock owner's policy.



About The PBL

The Spamhaus Policy Block List ("PBL") is an international anti-spam system maintained by The Spamhaus Project in conjunction with Internet Service Providers and is used by Internet networks to enforce inbound email policies. The PBL database lists end-user IP address ranges which should not be delivering unauthenticated email to any mail server except those provided for specifically for that customer's use. The PBL lists only IP addresses (not domains or email addresses).

For full information on how the PBL operates please see the PBL Home page and the PBL Frequently Asked Questions.


Associated Documents

PBL Home
PBL FAQs
How Blocklists Work

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