right, after Dingo.. did anything change? nada... if i receive mail, he still doesn't delete it from the server. i did choose that options, but it doesn't work. if i delete mail, it goes to trash. if i delete trash, it only deletes 15 mail and those are counted as a k9-error. if i delete the k9-error, it's directly back as a k9-error.
very spooky... but, under the line mail is working.

another problem has noting to do with mail, but i encountered this when i was trying to write this reply. i did this from my eDGe and halfway i switched quickly to mail and back. in this short time i was logged out of the forum. so all writing gone and i had to start all over again. that's serious irritating.