intermittent issue with sending emails

[amart79196]

Hey Everyone...Here is the classic NIGHTMARE problem...

Sometimes, and this happens only sometimes, there will be a problem we me messaging a customer of mine. On top of the screen will flash pink telling me the error (basically the same info as I will type below). Also, I will get a white screen with a description of the error, but, unfortunately it doesn't point me in the proper direction in order to fix the problem.

These are some of the issues that I have seen:

EMAIL ERROR: THE FOLLOWING FROM ADDRESS FAILED: [email protected] (THIS EMAIL ADDRESS IS MY EMAIL ADDRESS) : MAIL NOT ACCEPTED FROM SERVER, 530, AUTHENTICATION REQUIRED.

SMTP SERVER ERROR: AUTHENTICATION REQUIRED
SMTP SERVER ERROR: AUTHENTICATION REQUIRED

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This is for the most part when I do encounter this problem the error message that will show up. This doesn't happen all of the time, but it does happen sometimes.

I have tried rechecking all of the settings in zencart as they are all correct and again, it does work 80% of the time.

I am wondering if there is a solution for this?

Or better yet, is there a way I can get a more detailed log of this issue so I can get this to my hosting company to possibly find a solution to the problem. I'm afraid that without something very detailed, then I cant trace exactly where this problem is happening.

Any help on this matter is very greatly appreciated.

Thanks in advance!