Fixes to checking if mailbox name is valid. In case mailbox name is invalid, put it through str_sanitize() before giving it in an error message.
Fixes to checking if mailbox name is valid. In case mailbox name is invalid,
put it through str_sanitize() before giving it in an error message.

Distrotech/dovecot,damoxc/dovecot,Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot