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Sending emails to smtp.comcast.net now generates "Authentication Required" (v60.9.0 issue!?)

  • 1 reply
  • 1 has this problem
  • 17 views
  • Last reply by sfhowes

JonathanWexler
JonathanWexler
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I think this started around Oct 1 2019. Nothing has changed on my end, and Comcast sees nothing wrong on their end. I can receive e-mails fine; the credentials are still good for logging into Comcast's site.

TOP CHUNK of TROUBLESHOOTING INFO 

Application Basics

   Name: Thunderbird
   Version: 60.9.0
   Build ID: 20190902145622

   Update Channel: release
   User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0
   OS: Windows_NT 10.0

   Multiprocess Windows: 0/0 (Disabled)
   Web Content Processes:
   Stylo: content = true (enabled by default), chrome = true (enabled by default)
   Enterprise Policies:
   Google Location Service Key: Missing
   Google SafeBrowsing Key: Missing
   Mozilla Location Service Key: Missing
   Safe Mode: false

 Mail and News Accounts
   account1:
     INCOMING: account1, , (none) Local Folders, plain, passwordCleartext

   account2:
     INCOMING: account2, , (pop3) mail.comcast.net:995, SSL, passwordCleartext
     OUTGOING: , smtp.comcast.net:587, plain, passwordCleartext, true

 Crash Reports for the Last 3 Days

 All Crash Reports

 Extensions
I think this started around Oct 1 2019. Nothing has changed on my end, and Comcast sees nothing wrong on their end. I can receive e-mails fine; the credentials are still good for logging into Comcast's site. TOP CHUNK of TROUBLESHOOTING INFO Application Basics Name: Thunderbird Version: 60.9.0 Build ID: 20190902145622 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 OS: Windows_NT 10.0 Multiprocess Windows: 0/0 (Disabled) Web Content Processes: Stylo: content = true (enabled by default), chrome = true (enabled by default) Enterprise Policies: Google Location Service Key: Missing Google SafeBrowsing Key: Missing Mozilla Location Service Key: Missing Safe Mode: false Mail and News Accounts account1: INCOMING: account1, , (none) Local Folders, plain, passwordCleartext account2: INCOMING: account2, , (pop3) mail.comcast.net:995, SSL, passwordCleartext OUTGOING: , smtp.comcast.net:587, plain, passwordCleartext, true Crash Reports for the Last 3 Days All Crash Reports Extensions

Chosen solution

You have the security for the outgoing server set to 'none'. It should be STARTTLS security on port 587, authentication = normal password.

Tools/Account Settings, Outgoing Server (SMTP) at the bottom of the left pane, Edit... in the right pane.

https://www.xfinity.com/support/articles/setting-up-thunderbird

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sfhowes
sfhowes
  • Top 25 Contributor
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Chosen Solution

You have the security for the outgoing server set to 'none'. It should be STARTTLS security on port 587, authentication = normal password.

Tools/Account Settings, Outgoing Server (SMTP) at the bottom of the left pane, Edit... in the right pane.

https://www.xfinity.com/support/articles/setting-up-thunderbird