>Ihave have an Ex 5.5 SP3 server with 2000 or so custom recipients. The
>custom recipient's primary address is an X400 address but they also have an
>Internet address. What I want to do is change all the primary addresses from
>X400 to Internet addresses.
>If I use Ex Admin to change the primary address (by deleting the x400
>address and entering the SMTP address), I get a "user unknown" error back
>instantly when I send mail. Any ideas please?
Don't delete the X.400 address. Every Exchange directory object
Change the CR's "E-Mail" address (at the bottom of its "General" tab)
to be a SMTP address.
If the CR has only one X.400 address, modify it so it looks like the
X.400 addresses assigned by Exchange to the mailboxes. If it has two
X.400 addresses, make the one for the Exchange organization the
primary X.400 address and either keep the old X.400 address as a
secondary proxy address, or delete it.
MCSE+I, Exchange MVP
MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm