Outlook Connector olcon2 doesn't fetch inbox mails, but MAPI interface does

Dear all

After a change of Lotus Note Domino server IP (client version 5.0.9A)
form my IP Administrator, the Outlook connector is not more able to fetch
emails from Domino Inbox folder. If I send an email to the Domino Outbox
folder, the connector works properly adn send the email. If I change the
Outlook configuration to use MAPI services instead of Outlook Connector
Interface, both inbox fetching and output mail sending works right

Any idea ?

Thank you
Best Regards,
Paolo