Hello, on 04/08/2006 12:11 AM Webmaster said the following: > I'm not sure if this is the right list to ask this on or not.... > > Here's the situation... my php scripts were generating emails as > expected. I was shocked when they told me that exim was not responding > to requests on port 25 and had to be restarted. So, PHP communicates > with exim internally and doesn't have the need for ports as far as PHP > generated emails go? Can anyone describe how this communication takes > place between PHP and exim (or any mail server for that matter)?? Is > this why exim would not send my emails via thunderbird but would send > them via PHP??? You are a bit confused, but that is a normal confusion. You do not need an SMTP server to send messages. The role of the SMTP server is to receive messages, not to send them. What sends messages is an MTA (Mail Transfer Agent). Some SMTP servers are attached to MTA, so they can receive messages to be resent to their final recipients. PHP under Unix/Linux calls the sendmail program. Every Unix/Linux MTA emulates sendmail, including exim. The sendmail program just attempts to resend the message or queue it for later delivery attempt. Thunderbird and other mail clients could use sendmail to deliver messages if they were running on the same machine, but they do not support it. -- Regards, Manuel Lemos Metastorage - Data object relational mapping layer generator http://www.metastorage.net/ PHP Classes - Free ready to use OOP components written in PHP http://www.phpclasses.org/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
