Tiny, very-basic outgoing MTA?

Posted by Xeoncross on Stack Overflow See other posts from Stack Overflow or by Xeoncross
Published on 2011-01-05T01:46:11Z Indexed on 2011/01/05 1:53 UTC
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php

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smtp

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postfix

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mta

I am looking for a very tiny Mail-Transfer-Agent (MTA) for my smaller VPS which only need to send emails for new accounts or notifications. Originally, I used PHP sockets and wrote a 4kb STMP class to connect to google SMTP and send the emails - but I would like to be free of the 500 emails a day (or whatever) limit they have.

On larger VPS I can run Postfix - but it takes about 50MB which makes it too big for a 128/256MB VPS.

So are there any very tiny MTA's out there - or is there a rundown of the protocol of sending email (I guess it works by forwarding the mail through other servers till it reaches the correct end mail server right?) so I could build a smaller bash or PHP script for this outgoing stuff?

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