C-API LotusDomino - Status Error 3591 and 3633 - recipient of a mail not found

I use Extension Manager (C-API) to intercept mailing and adding link in the body.

A the event EM_MAILSENDNOTE (EM_BEFORE), I check the status (pExRecord->Status)

(STATUS LNPUBLIC EMHandlerProc( EMRECORD FAR * pExRecord ) ), and

I have the following status error:

Status Error 3591 - ‘Destinataires introuvables’

“Destinataires introuvables” means in french ‘Recipient of a mail not found’

Recipents of mails are belonging of a very big company using Domino multi-domains

CN=Albert LEBRUN/OU=FR-PARIS-HOLDING/O=ACME@ACME@ACME_HOLDING

I think the mail is sent directly to another domain, without check in any Domino directory.

Do you think I am right ?

In the same way, I have also Status Error: ‘3633’ ‘Vous devez convertir le message dans un autre format’

‘Vous devez convertir le message dans un autre format’ means in french

‘You must convert the mail in another format’ (probably mime/richText).

Do you think that may be the result of a policy administration ?

Yours

Maxime Choucroun