GWIA - Incoming emails show "queuing to MTA" but are not delivered to the end-user

Hello,

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NetWare 6.5
GroupWise 6.5.6
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First - apologies - I posted this in the wrong forum earlier.

We are trying to convert this client from using an old gateway, TFS,
to using GWIA. TFS runs on a Windows workstation and interfaces
through the GroupWise API gateway on the Novell server (GWAPI).

Problem : the messages come in from the antispam unit into GWIA,
GWIA posts a "Queuing to MTA" entry in the log, and the messages do
not get delivered to the end-user. Outgoing messages via GWIA are
fine.

After investigating this my guess is that the problem is with the
GWAPI gateway having an alias name of INTERNET in ConsoleOne. GWIA
is called GWIA.

Am I right in thinking that that is where the problem is ? Or is it
purely an MTA routing problem (I can see MTA picking up the problem
but then it disappears).

If so : they need to keep the GWAPI running so that existing Address
Book entries, and replies to old emails can work without problem, but
I also want them to have GWIA for all new emails of course. Is it as
simple as giving the TFS gateway a new alias type, e.g. TFS (I have
since tried that and it does not work) ?

Any ideas welcome.

Thanks.

Karl