MTA shows too many gateways

After a catastrophic server failure, the GroupWise system on our server needed to be
restored.  However, we were unable to successfully get the GWIA to establish a link with the
domain restored from backup.  The GWIA constantly indicated that the GroupWise link was closed, and the MTA constantly stated that the GWIA gateway was closed.

In order to produce a working e-mail system in the meantime, a new GroupWise domain was
created, with a different domain name than the original. The GroupWise software install went
without error, users of the new domain can now send e-mail internally and externally, and
receive e-mail from internal users, however, we are unable to receive e-mail from external
accounts into user mailboxes. The messages coming in appear to be properly received by the
GWIA and queued to the MTA, however, from that point the messages vanish, with no errors.  
Verbose logging is enabled for the GWIA, MTA, and POA.

I have read several possible causes in Novell's knowledge base, such as conflicting port numbers, but those causes do not appear to be the cause in my instance.

The MTA says that there are 3 gateways open, when  currently there is only 1 post office, on one domain in use, so I think there should just be 1 gateway.  Am I right?

Could it be that the MTA or the GWIA is using or looking for the old gateway domain? If so, how do I make sure only the new gateway domain is used?  If this is not the case, what could it be?

I have had no formal training on any Novell products, so please be patient with my ignorance.  :)

I have the clearance from management to purchase a single support request from Novell, but
due to the expense, I want to exhaust all possible options before doing so.  Management is urgent about this, however.

Thanks for any input.