On 08/09/2010 10:43 PM, Martin Schütte wrote:
On 08/09/10 16:29, Nicolas Michel wrote:
I want to know if there is a way to reject connections from host not
listed in the MX records of the domain it claims to be.
Try http://www.policyd-weight.org/
It checks and compares the client IP, its HELO, the from address.
Among other attributes it also checks whether the client is an MX for
its domain or in the same /24 subnet as the MX.
I also use it to include DNSBLs; because it uses a scoring system and a
single false positive attribute or BL listing will not cause a reject.
I just read some articles about DKIM. Someone already tried it?
There's something I'm not sure about : once a mail is encrypted, only
receivers which have DKIM feature on their mail can decrypt the mail? Or
this is compatible with standard mail server with no DKIM?
