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Outgoing emails stopped sending months ago.

djb-sab

About 6 months ago T-bird stopped sending outgoing messages. Each time I typed even a test message to send to myself, it rejected. Everything else works. I have defaulted to my Comcast email client which is not as friendly as T-bird. T-bird is up to date and none of my settings for outgoing mail was changed. Why won't my mail all of the sudden not process? What do I need to do? Thanks in advance.

Message I get when mail is sent below:

Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-a2p-647141.sys.comcast.net resomta-a2p-647141.sys.comcast.net ESMTP server not available (396356/151.247.189.217).

About 6 months ago T-bird stopped sending '''outgoing''' messages. Each time I typed even a test message to send to myself, it rejected. Everything else works. I have defaulted to my Comcast email client which is not as friendly as T-bird. T-bird is up to date and none of my settings for outgoing mail was changed. Why won't my mail all of the sudden not process? What do I need to do? Thanks in advance. ''' Message I get when mail is sent below: Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-a2p-647141.sys.comcast.net resomta-a2p-647141.sys.comcast.net ESMTP server not available (396356/151.247.189.217).'''

ప్రత్యుత్తరాలన్నీ (4)

Here is a sample comcast setup. How does it compare to yours?

IMAP (Incoming): Incoming Server Type: IMAP Mail Server Incoming Server Name: imap.comcast.net Port: 993 User Name: <my email address> Connection Security: SSL/TLS Authentication method: OAuth2

SMTP (Outgoing): SMTP Server Name: smtp.comcast.net Port: 465 Connection Security: SSL/TLS Authentication method: OAuth2 User Name: <my email address>

What are your Comcast server settings? Here are my working SMTP ones. How do they compare with yours?

SMTP (Outgoing): SMTP Server Name: smtp.comcast.net Port: 465 Connection Security: SSL/TLS Authentication method: OAuth2 User Name: <my email address>


It seems that about a year ago, Xfinity silently implemented OAuth2 as an authentication option, but didn't bother to tell anybody. I think the old, less-secure "Normal Password" method still works.

https://www.xfinity.com/support/articles/email-client-programs-with-xfinity-email

My results on outgoing read identical:

Description: Comcast Server Type: SMTP Outgoing Server Server Name: smtp.comcast.net Port: 465 User Name: djb-sab@comcast.net Authentication method: OAuth2 Connection Security: SSL/TLS

When I test the server, I get this message: Successfully established a secure connection to smtp.comcast.net:465.

Do you have multiple Comcast accounts set up in Thunderbird?

Make sure that cookies are allowed in Thunderbird (see <Settings | Privacy & Security | Web Content "Accept cookies from sites">, then restart Thunderbird.

If that doesn't help right away, it might help to delete any existing passwords and OAuth tokens from Saved Passwords (see <Settings | Privacy & Security | Passwords | Saved Passwords>.) You will be prompted for your credentials again next time you start Thunderbird, and hopefully they will be accepted.

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