Reset user password

SSHA512 is recommended for SQL backends, don't use MD5 unless you have too.

BCRYPT is recommended for SQL backens on BSD systems.

With MySQL or PostgreSQL backends, you can generate a password hash with openssl or doveadm command first, then replace old one with this newly generated one.

For example:

Generate a salted MD5 password hash with openssl (plain password is 123456 in this case):

$ openssl passwd -1 123456
$1$2dQ48hyz$.mCLeDSdPkP3fxVmARsB.0

Or, generate password hash with doveadm:

$ doveadm pw -s 'ssha512' -p '123456'
{SSHA512}jOcGSlKEz95VeuLGecbL0MwJKy0yWY9foj6UlUVfZ2O2SNkEExU3n42YJLXDbLnu3ghnIRBkwDMsM31q7OI0jY5B/5E=

Reset password for user user@domain.ltd and another-user@domain.ltd:

sql> USE vmail;
sql> UPDATE mailbox SET password='$1$2dQ48hyz$.mCLeDSdPkP3fxVmARsB.0' WHERE username='user@domain.ltd';
sql> UPDATE mailbox SET password='{SSHA512}jOcGSlKEz95VeuLGecbL0MwJKy0yWY...' WHERE username='another-user@domain.ltd';

With OpenLDAP backend, you can reset it with phpLDAPadmin or other LDAP client tools, SSHA is preferred if you have other applications to authenticate users against OpenLDAP.

Reset user password

See also