Hi,
I've been reading your forum posts on this issue, and they point to a permissions failure in the database. MySQL is populating new users in the users table, but no privileges are listed for them on SHOW GRANTS. So I granted all privileges on the roundcube database to a primary user and verified that this user has all privileges:
mysql> SHOW GRANTS FOR user1;
+-----------------------------------------------------------------------+
| Grants for user1@%
+-----------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'user1'@'%'
| GRANT ALL PRIVILEGES ON roundcubemail.roundcubemail TO 'user1'@'%'
|
+-----------------------------------------------------------------------+
2 rows in set (0.00 sec)
This seems like overkill, since user1 only cares about user1's settings (not those for user2, 3, 4 etc), but I read that db permissions might be the problem, so I opened everything to user1 to test this.
I set the smtp_auth_type to LOGIN (also tried PLAIN and DIGEST-MD5), but sending mail fails (for user1 and all other users) with an SMTP authentication failure.
Finally, not knowing whether I have a PHP mail() problem, I alternately tried 'mail.mydomain.com' and 'localhost' for the smtp_server setting, but that also makes no difference :(
I can send mail from Linux and Windows POP3 and IMAP clients on my LAN, but not Roundcube!
I am using SASL with Cyrus IMAP, and an LDAP database. What to look for?