I'm getting several different types of errors for our domain rogersbenefit.com
Stack Connect Fail MX Connect Fail
These will occur if IMail can't connect to a remote mailserver ("MX Connect Fail" meaning that it can't connect to one of the MX records, "Stack Connect Fail" meaning that it can't connect to any of the mailservers).
In most cases, these are due to problems on the remote end. But if you see them a lot, there could be a DNS issue on your end.
550 relaying to <[EMAIL PROTECTED]> prohibited by administrator 550 5.7.1 Unable to relay for [EMAIL PROTECTED]
This is most likely due to either [1] The IMail "Using-the-A-record-instead-of-MX-record" bug, or [2] ValidDomain.com has a bogus backup mailserver that rejects mail (which is all too common).
I think this is the MX / A record bug (like people in here suggested), but aside from upgrading, what else can I do.
If it is the "Using-the-A-record-instead-of-MX-record" bug, your options are to accept the problem or upgrade. There aren't any known workarounds to this problem. If it was just happening for one domain, you could add an entry to your HOSTS file -- but it seems to happen randomly.
However, the first thing to check is the log file entries, to see if IMail connected to an IP in the MX record (in which case the problem is at the remote end), or whether it connected to an IP in the A record (in which case it is the IMail bug, assuming that an MX record does indeed exist).
-Scott
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