roy at gnomon
Feb 28, 2004, 9:15 AM
As a followup to my previous message on the interaction of SES and
Problems with interaction of SRS and Challenge/Response
similar schemes with other anti-spam technology, there are also
similar issues with SRS that need to be addressed.
If a message is sent through an SRS forwarder to a system with employs
a challenge/response system such as TMDA, each message will appear to
be from a new sender, and will generate a new challenge (see my
previous message for more discussion).
I'm not immediately sure what the solution is. X-Primary-Address
doesn't work to fix this, for two reasons:
1. It's probably unreasonable to require all senders to add an
X-Primary-Address header to all mail they send, just in case it
2. It wouldn't help, even if they did, since the domain in the
X-Primary-Address header wouldn't match the domain in the envelope
sender, so TMDA would ignore the header.
There is a similar problem with the interaction with greylisting
Any thoughts? (And apologies if this has been discussed before.)
To unsubscribe, change your address, or temporarily deactivate your subscription,
please go to http://v2.listbox.com/member/?listname=srs-discuss [at] v2