Unsent mail Server not responding

[ecmjs]

We run a Lotus Domino server on a Linux 6.2 box
Looking through the router logs there are a lot of "mail not sent to XXX, server not responding" messages. Sometimes they go and othertimes the sender gets a message saying the mail was not sent.
However I can send e-mail to those domains through hotmail. This, I think, is because our server does not look at backup mail server. ie where the MX record has more than one entry Lotus only attempts to send mail to the first.
Is there anything I need to configure to get Lotus to look at secondary mail servers.

Thanks in advance.

 

[peterve]

is this a public mail server ? is it configured not to allow relaying ? (if your server is open relay, it will be blocked by a number of mail servers, resulting in delivery failures...) --------------------------------------------------------------------
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