Visitor
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1 Message
Sending email from Comcast server, getting this error below = What is Spamhous ?? and why is Comcast on the list ?
a Work colleague, also a Comcast customer, setup his email using Outlook.com, switching from Comcast.net
I tried sending his Outlook.com email 20+ times, all rejected.
i can send to his Comcast email from my Gmail account, however when I send from my Comcast account to his Outlook.com email it bounces. which tends to suggest there is a issue with Xfinity and your configuration. After many many attempts, this rejection notice noted a reference to https://www.spamhaus.org/
From SPAMHAUS -- Your IP address is either exhibiting suspect behavior, is misconfigured, or has a poor sending reputation.
As a result, this IP is listed in the
Click on More Info to see if you can request a delisting from this blocklist. This will also display any further information we have relating to this listing.
Reporting-MTA: dns; resqmta-c2p-570110.sys.comcast.net [96.102.19.25]
Received-From-MTA: dns; resomta-c2p-555954.sys.comcast.net [96.102.18.234]
Arrival-Date: Wed, 10 Sep 2025 17:39:38 +0000
Final-recipient: rfc822; xxx[Edited: "Personal Information"]
Diagnostic-Code: smtp; 550 5.7.1 Service unavailable, Client host [96.102.19.43] blocked using Spamhaus. To request removal from this list see https://www.spamhaus.org/query/ip/96.102.19.43 (AS3130). [Name=Protocol Filter Agent][AGT=PFA][MxId=11BBE03E155E4FAF] [SJ1PEPF00001CDF.namprd05.prod.outlook.com 2025-09-10T17:39:38.977Z 08DDF01F0B5FC389]
Last-attempt-Date: Wed, 10 Sep 2025 17:39:39 +0000
XfinityMarshante
Official Employee
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465 Messages
2 days ago
Hello @user_jp0a1, thank you for taking the time to leave a post. Sorry to hear that you are having issues with your email. If your IP address has been blocked, which has caused you to not be able to send emails, you would need to contact our Customer Security Assurance team. I have attached the link where you can reach them https://spa.xfinity.com/help/postmaster?faq=avoid-blocks-ipv4, or you can contact our Customer service at 1-800-934-6489 and ask for our Customer Security Assurance team.
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