Category Archives: Mail Post

RBLs with Exim4 (debian friendly)

Denying connections based on RBLs is a snap with Exim4. Most confusion is related to ACLs and where the definition sits. The fastest way to deny based on RBL is to add it to whatever ACL you specify in acl_smtp_rcpt … Continue reading

Posted in Email Servers, Exim, How Tos, Mail Post, RBL, SMTP, Software, spam | Leave a comment

PHP Header injection

I regularly shut down web sites that use the PHP mail() function. While the users of the sites mean well, they generally don’t do any checking before sending data to mail(). I’m not going to weigh in mail(). Enough has … Continue reading

Posted in How Tos, Mail Post, php, Programming | Leave a comment