I am using autoselect plugin as roundcube is on one server and imap on another one/ Users are able to send sasl autheticated mails, too. This is working very smoothly. Now I have following issue: my customer has {CRYPT} password instead of md5, something like: Code: {CRYPT}04U9bci2.l9Hs instead of: Code: $1$ZnE4vda.$Tge23ayfYbBppvzbH2BCi1 For users with md5 hashed password , there is no issue. For those with crypt password: she/he can easily read messages, but cannot send out, SMTP (535), auth failed.