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hmmoreno
1st Topic

4 Messages

Tuesday, March 11th, 2025 8:10 PM

Emails Sent to Comcast Addresses Are Throttled

@XfinityAlex Hello, I read that you have helped many with this issue, We just updated and changed our IP on email server. Now on the new server we getting throttled by comcast only with the following error 4.2.0 Throttled - https://postmaster.comcast.net/#RL000010. I have signed up for Validity and our email server has a SPF, DKIM, DMARC all set. The old IP was 64.135.55.45 and the new IP is 66.179.167.89. The domain names are chelseareservations.com and chelseareservations.net. I apprciated any help you can provide. Thanks

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Updated 

16 days ago

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XfinityAlex

Official Employee

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902 Messages

2 months ago

@hmmoreno I gave the domain a bit of help with reputation.  Let me know if you're still seeing an issue.  Feel free to DM me if you'd prefer.

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5

hmmoreno

4 Messages

Thanks @XfinityAlex , I will keep on eye on it, but it think the main issue is the new ip address [Edited: "Personal Information"] because my domain currently is running on both email servers on the older email server with IP 64.135.55.45 has no issues. Both email server Ip address seem to have a high score on senderscore as well. 

(edited)

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2 months ago

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XfinityAlex

Official Employee

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902 Messages

@hmmoreno​ I was looking at the logs.  This isn't SenderScore, but as the URL for RL000010 states a domain reputation calculation.

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2 months ago

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hmmoreno

4 Messages

@XfinityAlex  Thanks for the help hopefully the domain reputation helps, this is what I currently see on my logs.

[Edited: "Personal Information"] Throttled - try again later. Please see https://postmaster.comcast.net/smtp-error-codes.php#RL000003 58 126 [Edited: "Personal Information"]

(edited)

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2 months ago

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XfinityAlfonso

Official Employee

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1.6K Messages

Hello hmmoreno how have things looked on your end since our updates? 

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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2 months ago

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hmmoreno

4 Messages

Hello, emails delivery has been better after the change. Thanks

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2 months ago

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user_olu9rw

1 Message

17 days ago

I am an Xfinity/Comcast customer but do not have a Comcast.net email address. I send frequent bulk emails to individuals in 50 person batches. A high percentage of those batches have Comcast.net email addresses and they often don't receive their emails because Comcast throttles them. How can I resolve this?

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XfinityAlex

Official Employee

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902 Messages

@user_olu9rw​ Please send me a DM with some details.  Thanks

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16 days ago

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