Hi Philippe, Am Donnerstag, 22. Januar 2026, 14:53:38 Mitteleuropäische Normalzeit schrieb [email protected]: > Hi > > > 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. > > In the previous version of KMail, since the beginning of 2026, sent > messages were successfully sent and received but did not appear in > the Sent Items folder. I don't know what to do, especially since I've > looked at the logs and I don't see anything unusual. Is there a way > to trace the issue to get a starting point for a solution?
I encountered the same problem. The solution was to change the port for the connection from 465 to 587. Actually, kmail can fix that automatically for you if you let it figure it out on its own. -- Med vänliga hälsningar Patrick Franz
