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Comcast rejecting email

If you have a Comcast email address, odds are good you are missing some or all mail and reminders from Hypnotechs (as well as other mail). Please use a different email address when communicating with me or signing up for appointments or I won’t be able to respond to you. Worst of all, Comcast doesn’t inform you that they have discarded mail you are expecting. No “spam” folder, no notification.

If you do a Google search for posts about Comcast/Xfinity rejecting email, you will find thousands of complaints from customers about Comcast rejecting legitimate email. Rather than using software that judges individual emails as spam based upon the contents as most providers do, Comcast blocks shared IP address and none of the sites using that IP can send you mail. It’s pure laziness on their part and you are welcome to take it up with them, but there is nothing I can do.

Here’s what’s happening: Most websites use “shared” servers. Unless you have a large, very popular website, you don’t come anywhere near to using the full capacity of a server. So, to lower costs, internet providers offer servers for many sites to share. Sometimes it’s a few sites, sometimes it’s hundreds, but since each site uses only a fraction of the capacity, it works out. If one of those sites happens to send mail that Comcast deems as spam, they block the entire IP address, blocking not just the offender, but also all the other sites sharing that IP. Many years ago shared servers were the exception and most sites had their own IP, so that policy could work. But now that most websites are on shared hosting, the method is outdated and has been for decades.

Almost everyone but Comcast has realized that blocking shared IP’s is not the answer. In fact, I can’t name a major player in the email space who still does it, except Comcast.

I do not do ANY email marketing. Never have. Email is only used to communicate with clients and prospective clients who have contacted me.

If you choose to follow up with Comcast yourself, you can expect the following response: They will indicate that it is my problem to ensure that all the other users of my shared server comply with their unpublished rules or I should pay for my own dedicated server. This argument is similar to you being told that you are responsible for making sure that everyone who drives the same kind of car as you drive safely or that you are the only one with a car like that. It’s just not how it’s done.

My mail server complies with all current best practices to prevent spam. is not listed on any of the “Real Time Black Lists” and I don’t send spam. Clients using Gmail and every other major email service have no restrictions on my mails.

Comcast: It’s not me, it’s you. Get with the times.

If you use Comcast, I guarantee you are missing out on mail you want to receive, not just mail from me. Good luck.

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