I am having an intermittent issue with sending email from outlook (does not matter what device). No problem receiving just sending. Here is the error that I get:
Task 'firstname.lastname@example.org - Sending' reported error (0x800CCC67):' The server responded: 421 resomta-po-07v.sys.comcast.net
resomta-po-07v.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available'
Looking forward to an answer
Solved! Go to Solution.
your outbound email settings have the wrong password in outlook.
is it the same 421 error?
421 Error details: http://postmaster.comcast.net/smtp-error-codes.php#421
421 is the server response.
0x800CCC67 is the outlook response which you can reference to Microsoft for Outlook errors. Googling the error code from Outlook in many cases also helps.
I am also currently not able to send or reply to emails. I'm using the web based email (connect.xfinity.com)
It is working on my iPhone using the Xfinity Connect app though.