How to set up MailScanner, Clam Antivirus and SpamAssassin in CentOS mail server

In the world of mail servers, MailScanner is one of the best open source software for virus scanning and spam detection. MailScanner relies on pre-installed anti-virus and anti-spam software to check incoming and outgoing emails for malicious content or patterns of spamming. This makes sure that the mail server does not participate in the distribution […]
Continue reading…

 

How to set up Clam Antivirus, SpamAssassin and MailScanner on Ubuntu mail server

Antivirus and anti-spam protection are the among the most important security features for a mail server. Unix/Linux based mail servers are typically invulnerable to malware and viruses, and there is a very slim chance that the server itself may get infected. On the other hand, the operating system of an end user device may not […]
Continue reading…

 

How to set up RainLoop webmail in Ubuntu server

Webmail is undoubtedly an essential part of any mail server. While native email client software has typically more features compared to webmail services, accessing IMAP or SMTP server ports via an email client from outside of the trusted network can sometimes be tricky. Moreover, while you need a designated workstation, laptop, or mobile device to […]
Continue reading…

 

How to configure a mail server with Postfix and Dovecot for different requirements

Mail server admins may often have to deal with different types of requirements based on service policies or customer-specific requests. This tutorial will cover common cases of mail server administration. More specifically, it will show how different mail server requirements can be met by tuning parameters of Postfix and Dovecot. Useful Postfix Commands Before we […]
Continue reading…

 

How to enable user authentication for a Postfix SMTP server with SASL

Every mail server administrator dreads his or her server becoming compromised by spammers. A lot of effort, time and even money is spent on securing mail servers and making sure that the servers do not become open relay. To combat against spambots in an SMTP server, Postfix in general uses the mynetworks parameter to specify […]
Continue reading…

 

How to secure a mail server using encryption

SSL (Secure Sockets Layer) and its descendant TLS (Transport Layer Security) are the most widely used protocols for encrypting data that is exchanged between a server and a client. These protocols often use X.509 certificates and asymmetric cryptography. STARTTTLS is another method of securing plain-text communication. This protocol also encrypts data with SSL or TLS, […]
Continue reading…