Re: [exim] BATV and sender verification.

Christopher Meadors wrote:

>> When I set up BATV on my own system I was ultra-paranoid and concerned
>> that legitimate queries against my server to check the validity of email
>> addresses might be broken by it.
>>
>> So what I did was to restrict emails from null senders to having only
>> one recipient (defer further RCPT TO's), which is almost always the
>> case. Then I perform the BATV check in the predata ACL. That way other
>> peoples callouts aren't affected by BATV checks.
>
> Which is the same way I've done in the past.
>
> Now, what is troubling me is the recent mention of vacation messages.
> It seems that they'll be sent with a null sender, but to the header
> FROM:, not the envelope sender. That means they'll fail the BATV
> checks.

That does seem a little strange. Personally, I don't see it as a problem
if I don't receive vacation messages. In the ten years I've been using
email I've not received a vacation message that I couldn't have lived
without.

Mike