Re: Question about Thunderbird version in User-Agent header line

Me wrote:
> Starting in late February, I began receiving spam where the user-agent
> line of the header was this:
> 
> User-Agent:  Thunderbird 2.0.0.9 (Windows/20071031)
> 
> A search of my entire e-mail inventory going back almost 10 years
> indicates that the only e-mails I've received with "Thunderbird
> 2.0.0.9" in the User-Agent line corresponds only to this new set of
> spam, and not to any "legit" e-mails.
> 
> My question is this:
> 
> Does "Thunderbird 2.0.0.9" correspond to a string fragment that I
> would or could encounter in the header of an e-mail sent by a human
> using some version of Thunderbird?
> 
> Does any version of Thunderbird have:
> 
>     "Thunderbird 2.0.0.9 (Windows/20071031)"
> 
> As the exact (and only) contents of the User-Agent line?
> 
> If the answer is no, then I will add:
> 
>    [User-Agent contains "Thunderbird 2.0.0.9"] 
> 
> 	or
> 
>    [User-Agent is Thunderbird 2.0.0.9 (Windows/20071031)]
> 
> to the list of spam-detection conditions for my e-mail client
> (Communicator 4.79).

That is the standard UA string for TB.  The current version is 2.0.0.12, 
but a lot of people use outdated versions.  I would not use it as the 
basis for a filter.

Lee