1 Message
Excessive failed authentication, ESMTP server temporarily not available
I am having issues with my comcast outgoing email over SMTP from my home wifi network. When I atttempt a telnet test I am getting the "421 resomta-a2p-647652.sys.comcast.net resomta-a2p-647652.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available" error message. It appears as though my IP may be blocked for some reason. I've just noticed this in the last week or so but I don't use Comcast to send as often as I receive. Please advise.
BruceW
Gold Problem Solver
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26.3K Messages
10 days ago
This is usually due to a device, program, or app connecting to Comcast/Xfinity's mail servers with incorrect user/password information. Following the procedure described in https://forums.xfinity.com/conversations/email/possible-solution-for-unable-to-connect-to-email-from-apple-maybe-other-devices-after-changing-comcast-password/65a1a8fbf961c6163a367c6f may clear the problem.
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XfinityBrianH
Official Employee
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1.2K Messages
8 days ago
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