Some tips to secure your email server

July 3, 2016 by S4 R

Filed under Cloud, Cloud Mail Server

Last modified July 3, 2016

Some tips to secure your email server

Following are the important tip that you used follow to make your email server secure:

email server

email server

  1. Configure email relay option carefully to ignore being an open transmit:It is very significant to configure your email relay parameter to be very restrictive. All email servers have this selection, where you can specify which domain or IP addresses your email server will relay email for. In other words, we can say this parameter for which your SMTP protocol should forward email. Misconfiguration of this option can harm you because spammers can usage your email server.
  2. Set up SMTP authentication to control user access:SMTP Authentication services the person who usages your server to acquire permission to send email by first providing a username and password. This aids to stop open relay and misuse of your server. If configured the correct method and only recognized accounts can usage your servers SMTP to send mail. This arrangement is highly endorsed once your email server has a routed IP address.
  3. Limit connections to defend your server against DOS attacks:The number of networks to your SMTP server should be imperfect. These parameters be contingent on the conditions of the server hardware and it nominal load per day. The chief limits used to handle linking limits comprise. The total number of connections, total number of concurrent networks and maximum connection rate. To maintain best values for these parameters may need modification over time.
  4. Activate Reverse DNS to block bogus senders: Utmost messaging systems usage DNS look-ups to validate the actuality of the senders email domain before compliant a message. An opposite lookup is also an interesting choice for aggressive off fake email senders. When reverse DNS Lookup is make active, your SMTP confirms that the sender IP address matches both the host and domain names that were submitted by the SMTP customer in the command. This is very valued for blocking message that fails the address equivalent test.
  5. Use DNSBL servers to fight incoming mail misuse: One of the most vital configurations for protecting your mail server is to usage DNS based blacklists. Checking if the sender domain or IP is called by DNSBL servers world-wide, could cut down substantially the amount of received junk. Activating this selection and using a maximum number of DNSBL servers will greatly reduce the impact of unsolicited incoming mail. DNSBL servers list all known spammers IPs and domain for this purpose.

 

  1. Activate SPF to avert spoofed sources: Sender policy Framework (SPF) is a way usage to prevent deceived sender addresses. Now, nearly all abusive mail communication carries fake sender addresses. The SPF check guarantees that the sending MTA is endorsedto send email on behalf of the sender’s domain name. Once SPF is started on your server, the sending servers MX record is authenticated before message communication take place.

 

  1. Enable SURBL to verify message content: SURBL (Spam URI Real-time Block Lists) noticesundesirablemail based on invalid or spiteful links within a message. Having a SURBL filter aids to defend users from malware and phishing attacks. At present-day, not all email servers support SURBL. But if your messaging server does sustenance it, starting it will upsurge your server safety, as well as the safety of your whole network since more than fifty percent of Internet security bullying come from email at ease.

 

SO, these are the some tips to secure your email server.

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