Am Dienstag, den 23.06.2015, 10:48 +0000 schrieb dave@661.org:

Does anyone else here have a need to allow shell users to change their imap/pop3 passwords? I came up with a little thing that works similarly to regular passwd(1), dovepasswd, which can be found at https://github.com/DavidGriffith/dovepasswd. ; It does the job for me and I'd love for other people to take a look and give me some feedback.

If you want you can add my attached script for the horde groupware and the passwd module of it. On my own server I'm the only ssh/shell user there. But for friends/family I want to have them able to change the passwords themself. And it looks like your dovepasswd is for normal passwd files like my horde script. This is just a quick&dirty one but it seems to work for me. Note that I only use SHA512-CRYPT scheme. But feel free to improve it. Needs to be enabled in the horde/passwd/backends.php config.