SMTP stucked after migration from R5

Hi there,

My problem is related to smtp after migration.

The LDomino configuration (R5.04) was migrated from one Win2000 server to a better new one, same Win2000 with a R6.5.1… the problem is that SMTP inbound-outbound doesnt work… notes mail works fine… but it neither receive-smtp nor send-smtp… the outgoing mail stucks in mail.box

The DNS is on the same machine, with exactly the same configuration from the old one; and as the old box, it has 2 cards, one for the WAN (internet) and one for the LAN.

What on the config has to be changed? since it continues being the same as before.

How can I check it, beside doing nslookups, telnet connection.

Thanks in advance.