[kwlug-disc] how to tell programmatically that mail was undeliverable?
paul_nijjar at yahoo.ca
Wed Mar 31 08:58:05 EDT 2010
On Wed, Mar 31, 2010 at 09:30:06AM -0400, Robert P. J. Day wrote:
> however, given a properly-configured mail server at the other end,
> is there some RFC-approved notification that is *required* to be sent
> back so that i can verify the situation with as little muss and fuss
> as possible? thanks.
I don't know if it is required, but when troubleshooting mail server
problems I have seen 5.x.y codes indicating permanent errors.
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