5 Tricks For Securing SMTP Server

Securing SMTP Server – The security of your mailing infrastructure is closely tied to your sender’s reputation and is a building block for establishing long-lasting relationships with your customers. If you hack and spam land in your customers’ inboxes, there are several risks:

• Spam creates a lot of complaints against your domain and IP address.
• Spam will reduce customer engagement with your legitimate email.
• Both the customer and the mailbox provider (MBP) can block your mail.
• Spam will be sent to random email addresses to malicious actors that are not your customers, which typically include a high number of spam traps.

Some suggestions for securing an SMTP server or mail server are:

Encryption – Securing SMTP Server

While securing your mail server, make sure that you are using a secure connection. Encrypt POP3 and IMAP authentication and use SSL and TLS.

Mail relay configuration – Securing SMTP Server

Avoid having an open relay for spammers by specifying which domains / IPs your SMTP server will relay mail to.

Connections and default settings – Securing SMTP Server

To avoid DOS attacks, limit the number of connections and authentication errors your system accepts. Remove unnecessary server functionality by disabling any unnecessary default settings. Keep a dedicated mail server and transfer other services such as FTP to another server. So keep the maximum connection with you to your SMTP server.

Access Control – Securing SMTP Server

To protect your SMTP server from unauthorized access, implement authentication and access control. For example, SMTP authentication requires users to supply a username and password to be able to send mail to the server. So make sure that access to your server is need-based and can be shared with some people.

Abuse prevention – Securing SMTP Server

For more related information, check out the details migomail and telcob.

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