Thunderbird v78.7.0 ; "Login to server smtp.virginmedia.com with username xxxxxx failed."
For the past few weeks, sending an email usually fails in the morning but "retry" succeeds on the same day in the afternoon/evening.
I created a tbird.bat file as suggested elsewhere in the forum and part of the log file is as follows -
[(null) 4320: Main Thread]: I/SMTP SMTP Response: 525 5.7.13 Authentication Denied (VM321)
[(null) 4320: Main Thread]: I/SMTP SMTP entering state: 18
[(null) 4320: Main Thread]: D/SMTP SMTP Login response, code 525
[(null) 4320: Main Thread]: D/SMTP marking auth method 0x200 failed
[(null) 4320: Main Thread]: D/SMTP SMTP auth: server caps 0x20330, pref 0x300, failed 0x200, avail caps 0x100
[(null) 4320: Main Thread]: I/SMTP SMTP Send: AUTH LOGIN
[(null) 4320: Main Thread]: I/SMTP SMTP connection dropped after 257 total bytes read
[(null) 4320: Main Thread]: D/SMTP SMTP Login response, code 525
All settings are as suggested and turning on/off VPN and anti-virus makes no difference.
Any ideas?