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Email Blocked Sometimes Due To My Comcast IP?

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Email Blocked Sometimes Due To My Comcast IP?

Sometimes I have a problem with email blocked due to “my” Comcast IP listed on Spamhaus. According to Comcast, all their residential IP’s are automatically listed with Spamhaus so it’s impossible to have it removed and the only way to get a clean IP is to pay extra for their business class service which I’m not about to do.

I have a dedicated server which host my sites using my own IP’s that I send all my email through….no SPAM just replying to customers and questions sometimes from home. None of those IP’s including the primary IP is on any blacklist. My IP and server name is in the header listing where the mail was sent from along with passing SPF records.

The problem stems from a line near the bottom of the header which lists the sending computers name along with the Comcast IP, which is sometimes blocked.

One would think this shouldn’t matter as the mail is actually being sent through my mail server, although it does (sometimes) as the problem is erratic.

On another note, I also have a Gmail account set up in Outlook. During times when I’m having difficulty sending email using one of my domain addresses, I’ll use the Gmail account through Outlook. Although when examining the header of the mail sent using Gmail with Outlook, this also lists the sending computers name along with the Comcast IP yet is never blocked?

Any thoughts on how I might resolve this are appreciated. Thanks.

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Re: Email Blocked Sometimes Due To My Comcast IP?



Comcast Customer Security Assurance: 1-888-565-4329  7 days a week, 6AM to 2PM ET), http://security.comcast.net/get-help/contact-comca​st-security.aspx.

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