I have problems with emails not being sent to the recipients.. and not sure where to start looking for the problem.
A example... Email sent to a forum member and it is bounced back to me with the following message:
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Hi. This is the qmail-send program at name.server.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
<recipient@recipientemaill.com.au>:
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1) I'm not going to try again; this message has been in the queue too long.
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Yet I can send this exact email to the exact email address from my external email account (email address that does not use my server) and it goes through without a problem.
My server provider tells me there is nothing wrong with the server.. yet emails still have issues.. which tells me there IS a problem somewhere.. just not sure where to start looking.
Server running Cent OS5, PHP5, Plesk 8.6, ASL, 4PSA Spam Guardian and Clean Server.
