I updated mailer.inc.php on following section
$CONFIG['smtp_host'] = '';
$CONFIG['smtp_username'] = '';
$CONFIG['smtp_password'] = '';
But it still does not work. I got massage "Could not connect to smtp host : 111 : Connection refused "
and "PHP Warning: fsockopen(): unable to connect to mail.citidb.com:25 in /home/citidbco/public_html/gallery/include/mailer.inc.php on line 147" from the log.
The configuration I have put in are working fine for me in the email. Other server based email can also be sent using the same configuration.
Thanks for you help.
Oliver
There's little we can do to help you fix this, as it depends on server config (the error message you get comes from the smtp service, not from coppermine). I suggest asking your webhost for support.
I had the same error and I got it to work by replacing smtp host="localhost" with smtp host="127.0.0.1". It should not have mattered since that was defined in the host file, but it did the trick.