Comcast Exchange Servers on email blacklists

I realize this may not be the correct forum for this, but it does relate to domain names and ip addresses.

I have a customer who uses comcast exchange servers for her business email. Since October she has experienced trouble sending email to some of her customers. I was asked to look into the problem.

A quick check of a blacklist lookup tool showed me that the three comcast exchange servers that currently send out her mail are all listed on several blacklists.

The server ip addresses are:

69.252.207.30

69.252.207.29

69.252.207.121

Could someone please inform whoever needs to know about this?

Responses

Accepted Solution

dugco

New Member

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2 Messages

8 years ago

Same issue here with same listed IP addresses. email is bounced back from one client only at this time, but past history suggests we will have more issues until the blacklist entry is cleared.

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CCMichael

Gold Problem solver

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575 Messages

8 years ago

Hello interiorenv and welcome to forums.

I apologize for the delayed response to your post. I see that you already have tickets open concerning this and other issues with your account. With this issue I am forwarding your request to the Security Assurance team for review of the listed IP's. As for your other tickets placed would you please check your private messages for more details.

Thank you

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id09524

New Member

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1 Message

8 years ago

It appears this has come back again. I am showing 69.252.207.30 blacklisted again at SORBS and a few others. It is keeping me from sending mail. Can someone please reach out to these blacklist companies and correct this?

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tvm

New Member

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1 Message

8 years ago

same thing here!

also since late 2016

we are unable to communicate with some of our clients because of the issue

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Highrez

New problem solver

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15 Messages

8 years ago

After spending time with Comcast last night, i'm deleting this post... well, I would if I could.

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