Manuel Lemos wrote:

> Still if you want the fastest delivery in the world, you can skip
> queueing and talk directly to the final SMTP server. That is what the
> direct_delivery mode of this SMTP class does. I use it for deliverying
> really urgent messages. It uses PHP only, there is no sendmail or any
> MTA in the middle. That is why it is the fastest solution. 

Unless you're running on the mail-server or being NAT'ed through the
same, this is not advisable.  You run a significant risk of getting
your emails caught as spam. 

> TCP connections are not a good idea for local connections. That is why
> under Linux/Unix there are Unix domain sockets which are basically
> pipes for inter-program communication.

TCP connections are just fine for local connections.  And on some
platforms/setups they're even faster than Unix domain sockets. 


/Per Jessen, Zürich

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