Author: Marc Perkel Date: To: Matthew Newton CC: exim-users Subject: Re: [exim] Bounce Address Tag Validation (BATV)
Matthew Newton wrote: > On Tue, Feb 10, 2009 at 01:35:58PM -0800, Marc Perkel wrote:
>
>> One trick that comes to mind. I can track domains where the local_part
>> has an = in it. Then once a see one I can perhaps expect all email from
>> that domain to have the = in it and reject spoofers that lack the = ....
>>
>> Thoughts?
>>
>
> You'll break stuff.
>
> I have a list on our mail servers - if a user is in that list they
> get BATV applied, and bounces must be signed. If they're not in
> the list, they operate normally without BATV.
>
> Just one example...
>
>
