Your search for "filtering" returned 43 results:
Support More DNS Whitelists
Support more DNS-based reputation services in addition to Sender Score Certified, such as DNSWL.org. ORF could query the sender IP address against these lists and whitelist (allow through) trusted senders.
2 comments
15
DONE Attachment Quarantine
Option to quarantine specified attachments of emails for further inspection or release by the administrator (instead of dropping them entirely).
35
Per Recipient Attachment Filtering Exceptions
An option in ORF to whitelist some attachments for some recipients, but not for the others. For example [email protected] could receive ZIP attachments, even if an attachment filtering rule blocks all ZIP files for all recipients.
18
Add BCC Recipient Addresses to Emails
Normally, BCC (Blind Carbon Copy) recipients are not recorded in emails anywhere. Add a new option to ORF that records the original envelope recipient list (which includes the local BCC'd recipients) to the email header as e.g. X-Envelope Recipients: Recipient1;Recipient2, etc.
19