Permanent Error Outgoing email blocked by Spamhaus

I was attempting to send photos to get them off of a work computer. After 15 emails I received this from mailer-daemon@comcast.net

Diagnostic-Code: smtp; 550 5.7.1 Service unavailable, Client host [Edited: "Personal Information"] blocked using Spamhaus. To request removal from this list see https://www.spamhaus.org/query/ip[Edited: "Personal Information"]

Responses

Oldest First

Selected Oldest First

XfinityJeff

Official Employee

•

811 Messages

6 hours ago

Greetings @user_ykxpe0, and thanks for posting your issue to the Xfinity forums, I hope this message finds you well. I am sorry to hear about the issue you are having sending the email, but you have come to the right place for assistance with this issue. You mentioned that this happened after sending 15 emails. Were the previous emails successful, or did you get the error on all of them?

2

0

U

user_ykxpe0

Visitor

•

2 Messages

The first 15 were successful.

Like

Reply

1 hour ago

0

XfinityRichard

Official Employee

•

3.1K Messages

Thank you for your time today, @user_ykxpe0 I appreciate your time today. This error indicates your email server's IP address is listed on a Spamhaus blocklist, causing the recipient's server to reject the message. To fix, lookup your IP on Spamhaus, request removal if you are not a spam source, and check for compromised accounts or misconfigured DNS (SPF/DKIM).

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.
Was your question answered? Please, mark a reply as the Accepted Answer. tick

Like

Reply

1 hour ago

0

EG

Expert

•

117.3K Messages

3 hours ago

Concern moved here to the E-mail help section.

0

Email

user_ykxpe0

Permanent Error Outgoing email blocked by Spamhaus

XfinityJeff

user_ykxpe0

XfinityRichard

EG

New to the Community?