Re: Kmail - Sending Emails Unable

Martin Steigerwald <[email protected]> Thu, 22 Jan 2026 19:27:35 +0100
Newsgroups gmane.linux.debian.user.kde
Message-ID <6235247.lOV4Wx5bFT@laptop>
Greetings,

[email protected] - 22.01.26, 14:53:38 CET:
> Since updating KMail to version 6.6.1 ("25.12.1"), I can no longer send
> messages (this message is sent via the laposte.net website's utility).
> After a while, I get the following message: "Email sending failed.
> Message transport failed. The remote host closed the connection. Emails
> are sent via SMTP to the mail server." The problem is the same
> regardless of the mail server.

I had a similar issue with KMail 6.6.1 (25.12.1) today.

In my case I found that when I went into the configuration dialog of the=20
SMTP transport, switched to the second tab with advanced configuration and=
=20
clicked on auto-detect configuration again, that it changed the SMTP port=20
to 587. I think it was 465 before. Then sending of the mail worked.

Not sure whether the provider changed the port =E2=80=93 I was not notified=
, so I=20
doubt it =E2=80=93 or whether KMail / Akonadi SMTP transport changed behavi=
or.

I do not know whether your issue has the same cause, but it might be worth=
=20
a try.

Best,
=2D-=20
Martin - please no carbon copy to me