SYMPTOMS
When you make a profile programmatically, the call to
IMsgServiceAdmin:ConfigureMsgService() may return the following MAPI error message:
80040700 "MAPI_E_AMBIGUOUS_RECIP"
WORKAROUND
With Exchange Server version 5.5 SP3 or earlier, you can specify a Mailbox Display Name or Mailbox Alias that is unique but is a substring of another Mailbox Display Name or Mailbox Alias by using "=" before the string.
Alternately, you can specify the Distinguished Name (Obj-Dist-Name) of
the mailbox.
To specify a Mailbox Alias that is Admin when there are also valid mailbox
aliases of Admin1 and Admin2 you need to specify the string value as
"=Admin" in order for this call to work. For example:
rgval[0].ulPropTag = PR_PROFILE_UNRESOLVED_NAME;
rgval[0].Value.lpszA = "=Admin";
Similarly, to specify a Mailbox Display Name for "Administrator" when there
is also a valid Mailbox Display Names of "Administrator One" you would use
the "=" as demonstrated here:
rgval[0].ulPropTag = PR_PROFILE_UNRESOLVED_NAME;
rgval[0].Value.lpszA = "=Administrator";
An example of using the Distinguished Name follows:
rgval[0].ulPropTag = PR_PROFILE_UNRESOLVED_NAME;
rgval[0].Value.lpszA = "/o=MyOrg/ou=MySite/cn=Recipients/cn=Admin";