postfix failure: couldn’t connect to lmptd

[kelp]

I’m getting this output in mailq:

(temporary failure. Command output: couldn't connect to lmtpd: Connection refused_ 421 4.3.0 deliver: couldn't connect to lmtpd_)
                                         info@myRealDomain.ca

I recently moved a site from linux box to an Xserve running 10.4.11. I’m only using it as a webserver and have not activated any of the mail services using Server Admin (which I’m using because I don’t know enough about this as I likely should…newbie disclaimer). Incoming Email to my domain name is handled by a different hosting company’s smpt server as per my MX records. Messages sent from my server using the php mail() function result in the above deferral message if an email address on myRealDomain is included as a recipient. The other recipients get their copy. Is this happening because I haven’t activated smpt on my server?

I do know the host that handles my incoming mail uses some sort of anti-spam greylist/soft bounce requirement so might these messages be a reflection of the message coming back with the expectation my server will re-send them to meet the greylist requirement?

Thanks for your thoughts.

PS: If I do need to activate some of the XServe’s mail services where might I go to educate myself on doing this in a way that prevents them being abused: I really only want to send emails from controlled php scripts.

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