Sometimes, mailing lists and newsletters are identified as spam because they are sent from bulk mailers. If you do not want to place the domain from which a mailing list/newsletter is sent into the trusted addresses list, you can set up a rule to deliver the message anyway.
If there is already a rule setup to direct spam into a specific user’s mailbox (for example, Spam), you can have the user create a rule as described below:
Look at the header of one of your mailing list/newsletter messages that was identified as spam. Find the X-IMAIL-SPAM line. Copy and paste this entire line into the text area for a rule. For more information, see Setting Inbound Delivery Rules for IMail lists.
To set up a host rule to place all messages identified as spam in a specific mailbox, click here.
Field: Header
Comparison: Contains
Click Add. The new rule is added to the list of rules.
Note: Even though you may set up a rule to deliver a mailing list/newsletter to your Inbox if it matches a blacklist, this does not mean that the mailing list/newsletter will not be caught by another anti-spam component. It is possible that occasionally the list will be identified as spam by content filtering because the content is similar to spam. If this happens create another rule with the new X-Header.