This forces all web scripts to send mails via the Exim server, which allows us to keep track of how many mails were sent by each user.Ģ. It limits outgoing port 25 connections to only Exim server and Mailman mailing list. That is why here at Bobcares, we enable SMTP connection restriction in the servers we support. If left unchecked, this is an open playing field for malware to send spam anywhere they want. Spam scripts connect to port 25 of remote mail servers to send spam. Restrict outgoing SMTP connections to Exim & Mailman So, to block spamming, the anti-spam measures must address these two exploit channels.ġ. It is then used to send out spam through SMTP authentication. Using stolen email logins : Attackers use phishing or brute force to obtain email ID login details.These scripts then follow external commands to send out spam mails. Exploiting web application vulnerabilities : Spammers use unpatched vulnerabilities to upload spam scripts or bots.Spammers use broadly two ways to send spam through a server: Quick primer – The mechanics of outgoing spam Today we’ll list down the top 7 cPanel Email Security measures that has the most effect on blocking outgoing spam and IP blacklisting. Here at, our Support Engineers help web hosts, digital marketers, and other cPanel users maintain server security as part of our Outsourced Tech Support Services. It can lead users to overlook strong anti-spam measures, choose the weak ones instead, and cause their mail servers to get blacklisted. It’s good to have a large arsenal of anti-spam tools.īut for an uninitiated web user, all these tools look the same.
#Cpanel email verification
And that is why people have invented a gazillion ways to fight it.Īnti-spam systems range from SPF & RFC checks to Sender verification & Mail queue cleaners.Įvery hosting company provides almost all of these tools to fight spam through administration panels such as cPanel, Plesk, DirectAdmin, etc.
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