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Re: FORMS, validating mail was sent [message #181909 is a reply to message #181906] Sat, 22 June 2013 12:45 Go to previous messageGo to previous message
Tim Streater is currently offline  Tim Streater
Messages: 328
Registered: September 2010
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In article <kq2ku9$hpj$1(at)news(dot)albasani(dot)net>,
The Natural Philosopher <tnp(at)invalid(dot)invalid> wrote:

> On 21/06/13 18:25, Tim Streater wrote:

>> I don't use mail(). I've rolled my own, which seems to work.

> yes., well in which case its the MAIL FROM: command which is crucial in
> the smtp conversation.
>
> MTAS generally ONLY respond to RCPT TO to get the message moved along
> and the MAIL FROM to determine its come from a real person. They will
> normally check MX records for that domain and may even send a null
> message to it to check it exists. If not it may junk the mail. Because
> its unbounceable, so norally its rejected right at te start.

I was able to use a MAIL FROM with a fake address from one of my mail
accounts to another. That arrived a s expected, so it can be done but
that of course is just one pairing out of a large number.

--
Tim

"That excessive bail ought not to be required, nor excessive fines imposed,
nor cruel and unusual punishments inflicted" -- Bill of Rights 1689
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