Visitor
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2 Messages
Please Assist - Unable to send email in third party applications despite setting to allow
Third party IT Support, assisting a home user - Having an issue where we're getting incorrect SMTP passwords in desktop applications when trying to send email. The password is correct as we've removed and re-added the account and we're able to receive email.
We've tried in both Outlook for Windows (and reset both that and the Mail for Windows application) and Thunderbird, using 587 StartTLS and 465 SSL. Outlook returns a 535 error (authentication rejected from the server) and Thunderbird states the SMTP password is incorrrect.
As an update to the above, we've also confirmed we are unable to send in ANY third party mail client, mobile or desktop. Password has been reset several times, and we can confirm it's correct as we're able to log into the web portal and send email.
Issue seems to be tied to either the third party email security setting not being properly toggled, or desynchronization of smtp from main password.
XfinityJustinM
Official Employee
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404 Messages
1 month ago
Hi @user_kvc1k7, thank you for taking the time to create an official post on our Xfinity community forums support page. Third-party client issues can be quite difficult to troubleshoot as we are unable to take view any issues with the third-party clients. With that being said, have you made sure that your settings align with the preferred IMAP details in the article below?
Set up your Xfinity Email address with an email program
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user_kvc1k7
Visitor
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2 Messages
25 days ago
Yes, as stated in the original post, we've tried every iteration of the IMAP settings available in XFinity's documentation, both using 465 and 587 with both SSL and StartTLS. In all cases, it either fails to connect at all, or claims the password is incorrect for IMAP, though it is able to authenticate to the SMTP server.
We are able to log into any third party client and RECEIVE mail without issue. However, in all third party mail clients, none are able to send, and all report back that the password is incorrect, even though it shouldn't differ from the accepted account/smtp password.
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user_17j0q5
Visitor
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1 Message
19 days ago
Have you figured out the problem? I am having a similar problem. Outlook on PC, Laptop, iPad and iPhone work when on an Xfinity WiFi Networks. However, when traveling, whether Cellular or Wifi, Outlook cannot authenticate to the Comcast Email Server; responds "password incorrect" despite entering the correct password. Other email accounts (Office 365, Microsoft Exchange) set up on Outlook client works without issues.
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