Your search for "spam" returned 9 results:
DONE Update SPF Test To The Latest RFC
ORF implements an earlier (draft) version of the SPF specification instead of the final version RFC 4408. Update the SPF implementation in ORF to RFC 4408.
4 comments
33
Validate Sender Address using Recipient Validation
Validate sender email addresses using the same valid email address source as the Recipient Validation test if it claims to be from any of the local domains. For instance, if the sender is [email protected] and example.com is my domain, check if [email protected] is a valid email address.
17
RHSBL Support
Add support for filtering based on RHSBL-type blacklists in ORF, such as rhsbl.ahbl.org.
21
Sender Callout Verification
Add a new test for Sender Callout Verifications. This type of test connects back to the email sender's server and attempts to find out if the sender is valid, by starting an SMTP conversation (no email is actually sent). If the sender's email address is rejected as invalid by the sender's email server, the sender email address is considered forged and the email is blacklisted.
[Note from Vamsoft: The value and side-effects of this anti-spam technique is disputed in the industry.
For instance, simultaneous Sender Callout Verifications from thousands of servers (as a result of a major
spam breakout with forged sender email addresses) can result in a kind of Denial Of Service attack performed
against the forged sender's email servers].
24