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Thread: KDE5 Kmail does not send e-mail

  1. #1

    Default KDE5 Kmail does not send e-mail

    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:

    Code:
    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

  2. #2

    Default Re: KDE5 Kmail does not send e-mail

    Quote Originally Posted by MarkNei View Post
    The KDE forum also suggested deleting the running pop3 resources (which I found using "ps aux") which did not solve the problem.
    Obviously.
    Sending emails has nothing to do with POP3 (which is for downloading received emails from the server).

    Any idea of what could cause this?
    Wrong authentification settings maybe?
    Try something else than "PLAIN".

  3. #3

    Default Re:[SOLVED] KDE5 Kmail does not send e-mail

    Thanks. I changed the authentication to: LOGIN and I can send mail again. Strange, but true.I hope this helps other folks.

    Mark

  4. #4

    Default Re:[SOLVED] KDE5 Kmail does not send e-mail

    Quote Originally Posted by MarkNei View Post
    Thanks. I changed the authentication to: LOGIN and I can send mail again. Strange, but true.
    Well, the error message you posted did say:
    Code:
    Sending failed:
    
    Your SMTP server does not support PLAIN.

  5. #5
    Join Date
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    Default Re: [SOLVED] KDE5 Kmail does not send e-mail

    Quote Originally Posted by MarkNei View Post
    Thanks. I changed the authentication to: LOGIN and I can send mail again. Strange, but true.I hope this helps other folks.

    Mark
    Encountered some problems with Kmail sending mail when turning authentication on. Used akonadiconsole to kill existing Mail Dispatcher Agent and start a new one.
    AMD Athlon 4850e (2009), openSUSE 13.1, KDE 4, Intel i3-4130 (2014), i7-6700K (2016), i5-8250U (2018), openSUSE Tumbleweed, KDE Plasma 5

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