Yes. I tested two different servers actually. One of them is really basic so I dont care it that much but another server, SmarterMail is more professional edition and it sends it emails anyway as you said. I will look this in more deeply and inform you about if there is an alternative solution independent from cUrl.

Thanks for your quick answers all

> Date: Mon, 19 Dec 2011 13:11:34 +0100
> From: daniel_at_haxx.se
> To: curl-library_at_cool.haxx.se
> Subject: RE: Cancelling Mail Request
>
> On Mon, 19 Dec 2011, Nazim Oztahtaci wrote:
>
> > Actually when I read about this functionality on the previous
> > implementations, I see that it is close to what we are doing. When I look
> > the packages from Wireshark, I see that when we do not send any QUIT message
> > to server, we close the connection in the middle and as I know if that
> > happens Smtp server should skip this mail request. Am I right?
>
> I wouldn't be surprised if there are servers who would send it off anyway, but
> the SMTP spec in RFC 2821 section 4.1.1.10 for QUIT is quite clear:
>
> The sender MUST NOT intentionally close the transmission
> channel until it sends a QUIT command and SHOULD wait until it
> receives the reply (even if there was an error response to a previous
> command). If the connection is closed prematurely due to violations
> of the above or system or network failure, the server MUST cancel any
> pending transaction
>
> --
>
> / daniel.haxx.se
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Received on 2011-12-19