Reducing sending spam through php or localhost

[Juan Imedio]

We are having problems with spammers on our server using a client bug or virus through accessing the FTP client and upload to send files through the php mail function or in local mode. As we are constantly being blacklisted banning.

We thought to reduce this problem sendmail redirecting all traffic to another virtual server for the main server ip is not banned blacklisted.

I've been watching how I do it and thus apparently installed plesk qmail over sendmail, sendmail redirects traffic to qmail.

How could this problem?
I've tried installing the Sendmail with "yum install sendmail" in fedora but does not seem to work.
nano / etc / mail / sendmail.cf
# "Smart" relay host (may be null)
DSipservervps

Thanks for your help.

 

[IgorG]

Not sure that Plesk Qmail will work correctly and installing Sendmail with yum on Plesk server.