I have SuSE 13.2 and kmail 4.14.9 on three different PCs. I'm working with four email-accounts at three different servers since 10 years and 20 000 mails, recieving mails with pop3, sendig with smtp and everything was fine until 20th of December. Since then I can recieve every mail but can only send from each one account. I never changed any setting during the last 6 month, but are doing the regular online updates from SuSE.
1. The settings should be o.k., Thunderbird is fine with them.
2. Sending from any other than the default account brings:
sending failed, 5.7.1 <firstname.lastname@example.org> sender adress rejected: not owned by user email@example.com
Watching kmail on the command line showed:
kmail2 (5034) /kdepimlibs (mailtransport) could not access outbox
3. A dozend attemps of deleting kmail, fresh installing, new owners, different settings and configurations brought the following observations: Each time only the first identity with the settings for the smtp.server is accepted for sending and, no matter, which email account it is. Recieving is no problem in any account. The last attempt I consequently skipped kwallet, so I had to give in the required password for the accounts each time separately. There I noticed, that whatever smtp.server I wanted to use, the password for the default server was asked.
Looking in google I found a link with obviously a similar question,
but this guy had problems after an installation, whereas my systems were perfect for years.
My question is: What has happened (just to know for the next incident) and how can I solve this problem. I'm tired of using two mailing programs simultanously, one for recieving and one for sending.