does postfix admin have a forgotten password link people can browse to, to change their password?
I want to put a link on my roundcube login page, if possible.
Not really. IF they have access then users can change password from their account edit page, but that's all PFA offers natively. There is a plugin for Squirrelmail, but AFAIK the one for Roundcube appears abandoned.
Sign up for the SourceForge newsletter:
You seem to have CSS turned off.
Please don't fill out this field.