On 2010/12/29 11:24 AM, Adam Moffett wrote:
The PTR is set by the ISP, not the spammer. My guess would be that the period for a PTR would be a policy of a particular network operator or group of operators. So matching it in spam assassin would be scoring messages on the ISP they came from rather than their spaminess.
In the sited example, yes, the PTR is set by the ISP and not delegated to the spammer, but a pattern is a pattern and that's what we're here for. Plus, for all we know, the ISP has a web interface for setting PTR records rather than using delegation.
-- /Jason
smime.p7s
Description: S/MIME Cryptographic Signature
