> It is important to note that you should only have one DNS > server listed in the IMail SMTP settings (IMail has a known > sporadic issue if there are multiple DNS servers listed).
Really? I've listed 3 DNS for over 4 years now without any problem. Is there any KB article?
I'm not sure if they have a KB article about it.
The issue I am aware of will occur when something goes wrong with the first DNS server (a simple dropped packet can do it), and the backup DNS server is denying DNS lookups. IMail will try an MX record lookup, it will fail, and IMail will then try the A record on the primary DNS server. This causes the E-mail to incorrectly be sent to the wrong IP address, causing bounces, deleted E-mails, and other such nasty things.
-Scott
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