Re: [exim] Sender callouts

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Autor: Jeremy Harris
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Dla: exim-users @ exim. org
Temat: Re: [exim] Sender callouts
Ian FREISLICH wrote:
> Wakko Warner wrote:
>
>>Ian FREISLICH wrote:
>>
>>>So you essentially land up connecting to the remote server and go
>>>MAIL FROM:<$sender_addres>
>>>RCPT TO:<$sender_addres>
>>>
>>>There are many sites that reject <> and are not listed on
>>>dsn.rfc-ignorant.org. My experience is that these sites correctly
>>>verify for some non null sender. If they're so broken that they
>>>do callouts for senders that are local and sender callout bomb
>>>themselves, well that's somebody elses problem isn't it?
>>
>>Won't go over too well if the sender's server uses SPF. It's also possible
>>the site won't accept the sender if it's a local domain and not
>>authenticated.
>
>
> Hmm, I hadn't thought of that. I haven't seen it fail that way
> yet. Still, the callout will fail and their mail won't be accepted
> which is no different to the current situation except that the
> number of FP callout rejections is reduced. If I can't at least
> verify that you would accept mail from me in return, I won't accept
> from you. Maybe that's too bloody minded and I'll be subdued by
> time and experience.


If you're going to be bloody-minded (I am, too) why accept mail
from sources that won't accept a properly-constructed bounce?

Cheers,
    Jeremy