Here is a quicker way to install greylisting and give it a decent control panel in plesk Big thanks to http://www.atomicorp.com/ I don’t trust or use the builtin greylisting in plesk as it is borked and I can’t see them getting it right.
One of the clients on a server I manage used a very weak password on two mail accounts and both of these had been exploited by spammers. Now putting aside the new systems that will have to be implemented to prevent this in future we had the job of cleaning up. After clearing the mail [...]
If you get the mingwm10.dll found not error this is “one” solution.
If you have swapped the MTA from postfix back to qmail then the mail() command in php may not work. This is because the symbolic link to the /usr/sbin/sendmail compatibility program is broken. Execute these commands as root.
Add the following line to /var/www/vhosts/subdomains/your-subdomain/conf/vhost.conf The add an A record of www.subdomain with the IP address of the server. Then execute this command as root.