I have used kmail for years without problems (that couldn’t be easily fixed, or worked around or tolerated) but now I’m stumped.
Whenever I tried to send e-mail, I got this error:
Sending failed:
Your SMTP server does not support PLAIN.
Choose a different authentication method.
The server responded: "5.7.0 Error: authentication failed: generic failure"
The message will stay in the 'outbox' folder until you either fix the problem (e.g. a broken address) or remove the message from the 'outbox' folder.
Now, fortunately, I run my own mail server. I can confirm that the server requires authentication and uses TLS. I know the server address well. The server has worked well for many years.
I found on the KDE forums to try to delete and recreate the sending account, I did, Before I deleted and recreated the account, I would get the above failure message. Now, I don’t get that message. The KDE forum also suggested deleting the running pop3 resources (which I found using “ps aux”) which did not solve the problem.
Any idea of what could cause this?
I do have a self-signed ssl certificate. Could that be the problem???
Thanks for any advice,
Mark