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outgoing with comcast

Thunderbird Troubleshooting
jfescen replied 4 years ago
jfescen
jfescen

I have used Thunderbird for years with no problem. For the last several months, I receive the following message on outbound messages only. Additionally, this issue only occurs on my desktop computer, thunderbird works fine with my laptop: “An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-a1p-076783.sys.comcast.net resomta-a1p-076783.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available.”

I have used Thunderbird for years with no problem. For the last several months, I receive the following message on outbound messages only. Additionally, this issue only occurs on my desktop computer, thunderbird works fine with my laptop: “An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-a1p-076783.sys.comcast.net resomta-a1p-076783.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available.”

All Replies (2)

sfhowes
sfhowes

Chosen Solution

Other users have reported similar issues with Comcast:

https://support.mozilla.org/en-US/questions/1365914

jfescen
jfescen Question owner

my issue was with Norton VPN. After I disabled, it works fine