Protect my server from being used by spammers
I have a server at thePlanet.com.
I have a lot of problems with users signing up for an account and use their account sending out a lot of spam.
Is there anyway I can prevent my server from being used by spammers?
The SMTP Tweak is enabled and I have set the maximum allowed e-mails sent out to 100 per day.
Thank you.
