Re: [exim] sender return-path mismatch again

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Autor: Peter Bowyer
Data:  
Para: exim-users
Asunto: Re: [exim] sender return-path mismatch again
Marten Lehmann said:
> Hello,
>
> some time ago, I asked for a way for customers on a webserver so send
> emails with an arbitrary sender-address. I have
>
> untrusted_set_sender = *
> local_from_check = false
>
> in my configuration right now. If someone calls
>
> sendmail -t -flehmann@???
> From: lehmann@???
> To: lehmann@???
> Subject: test
>
> this mail indead has the sender-address and return-path lehmann@???.
> But this -f option is too complicated to use because it is unknown to
> the most users. Most of them are just using the mail()-function in PHP
> and don't care about return-path and sender-address. And I guess you
> can't blame them for this. What I'm still looking for is a way to tell
> exim to use the address stated in the "From:" line as the return-path.
> If there's no such line, exim can still use uid@hostname. As the sending
> uid is stored in the message header anyway, there should be a problem
> with unknown users or disguised identities. How do other webhosting
> provider solve this? The way I described used to work with qmail, but I
> don't want to install qmail again.


Can the PHP internals be configured to talk SMTP over TCP instead of
calling the sendmail binary? This might be a route to explore.

Peter (a non-PHP-enabled person)