how to check if mail is encrypted ?

[Saurabh]

I remember there was a method to check if the mail is sent using TLS, This is
done using checking email headers. How to create a category that
automatically cecks for TLS encryption ?

Thanks for help

 

[Saurabh]

i should have mentioned outlook2003

 

[Brian Tillman]

I remember there was a method to check if the mail is sent using TLS,
This is done using checking email headers. How to create a category
that automatically cecks for TLS encryption ?

Whether or not TLS is involved should be evident from the headers. You
should be able to check for it with a rule that looks for specific words in
the headers (with those specific words being a string signifying that TLS
handshaking has occurred - perhaps "version=TLS" or "cypher=DHE") and, if
found, assigns a category.

 

[Saurabh]

Thanks for your reply.. i got it.

Whether or not TLS is involved should be evident from the headers. You
should be able to check for it with a rule that looks for specific words in
the headers (with those specific words being a string signifying that TLS
handshaking has occurred - perhaps "version=TLS" or "cypher=DHE") and, if
found, assigns a category.