Hi Fernando,

>I have Imail running and I want to know how to use it like relay for
>secondary servers with others domains. The problem is that these secondary
>servres has dynamic IP.

yes, that's a pb. The only security Imail and ETRN provide for 
relaying mail is a fixed ip address for the relayed mail server.

>Let me explain:
>-DNS servers has as primary MX the IMAIL server. So the Imail queues mails
>and waits for dequeue tem

ok, so far, so good

>- How to dequeue this domain from a mail server that has dynamic IP?

Can't do it.

>Has the Imail the possibility to do like relay server for domains and use ETRN
>command without see the source IP server.

no

>Does Imail server need to know the source IP of teh secondary mails 
>erver to allow ETRN command?

yes.

ETRN has no other security than the pre-defined, fixed ip of the 
relayed mail server.

Len


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