Author: Dave C. Date: To: Marc MERLIN CC: Philip Hazel, exim-users Subject: Re: [Exim] can't currently verify any sender in the header lines
Ok, let me revise that.. On my _personal_ server, I have setup SMTP
callback, and have no plans to let servers mail me that wont accept
MAIL FROM:<>...
On the ISP I run, we dont even have callback checking on.. Of course,
even with that:
I beleive this is the same three days your logs probably cover..
On Fri, 9 Feb 2001, Marc MERLIN wrote:
> On Fri, Feb 09, 2001 at 05:11:34PM -0500, Dave C. wrote:
> > > I'm going to patch exim to do a MAIL FROM: <postmaster@???> instead.
> >
> > Ugh.. You are Waaaay too nice.. I would never let anyone get away with
> > that.
>
> kenny:~# wc -l /var/log/exim/rejectlog
> 123680 /var/log/exim/rejectlog
>
> (that's in about 3 days)
>
> People are going to notice eventually and when the CFO/CIO asks why he's not
> been getting some of his mail and "I don't care about no stiking RFCs, just
> make the damn mail work", all mail checking will have to be turned off.
>
> For that matter, I've already had enlightened people like Ted T'so (major
> linux developer for those who don't know him) complain because we bounced
> confirmation Emails from web sites that had broken DNS/mail (one with travel
> confirmation from linuxworld, and some other confirmation from Tivo.com).
>
> Basically I'm walking a very fine line here. If I reject too much legitimate
> mail (i.e. mail with bad headers that isn't spam), I will be eventually
> forced to turn off all checking (that's until checking can be done at rcpt
> to time, and be turned on and off on a per user basis).
> Users believe that if hotmail receives the mail, so should we. What can I
> say...
>
> > > Would you consider making that an option for a future release?
> >
> > Definately default to the current behaviour, and the docs should have a
> > STRONG recommendation not to change it..
>
> I'm fine with that.
> Basically, the way it is, I'll have to patch it, or turn it off, which I'd
> rather not do. How people use it is those people's business :-D
> The only thing that ticks me off is people who refuse all Email if the HELO
> domain doesn't match the name linked to the reverse lookup of the IP you're
> connecting from (Hello, NAT anyone!!!)
>
> Marc
>
