Solution and security risks for the email server to be blacklisted by RBL

The company's Domino Mail Server was recently attacked by spamhaus In the XBL blacklist. The situation was urgent and all emails sent from the company to foreign customers were rejected, however, rejected emails are delayed in the shuttle fish spam gateway queue. In this case, only the XBL blacklist can be removed first, so that these emails can be sent first, and then perform the following self-check! In case it is blacklisted again !!!

1. check whether there are security risks in the email server. Pay attention to regularly modifying the administrator password, patch all official Microsoft patches, regularly scan viruses, and develop regular analysis to view mail server logs.

2. Check the spam source file in the barracufish gateway to find the username that leaked the password, modify the password of the user on the email server, and check whether the user's computer has security risks, install Microsoft official patches,

3. if not necessary, do not log on to the email server and regularly check the backup status.

 

Solution and security risks for the email server to be blacklisted by RBL