Trying to keep this as simple as possible.

We've already created the email accounts that we need (e.g. account[1-20]@domain.com) on Exchange/AD. We'd like to now enable incoming emails on SharePoint 2007 lists corresponding to these accounts.

My thinking is we don’t need to configure Directory Management Services [2] – the architecture will be simpler without it and the application doesn’t require these services.

However, we still need to route messages from Exchange to either local SMTP services (via the connector described in the articles below) or by user-specific drop-folder settings (if permitted by Exchange).

So the question is:

• can we instruct Exchange to use a drop folder just for accounts account[1-20]@domain.com?
• or do we need to change the accounts to account[1-20]@sharepointsmtp.domain.com and re-route those message to the local SMTP service that will drop them on disk?

I've read the material below.

[1] -

http://www.combined-knowledge.com/Downloads/2007/How%20to%20configure%20Email%20Enabled%20Lists%20in%20Moss2007%20RTM%20using%20Exchange%202007.pdf

http://social.msdn.microsoft.com/Forums/en/sharepointdevelopment/thread/91e0c3d2-afe6-469d-b1bc-6ae7a9aa287e

http://gj80blogtech.blogspot.com/2009/12/configure-incoming-email-setting-in.html

http://www.jasonslater.co.uk/2007/08/10/configuring-incoming-mail-on-moss-2007-and-exchange-2007/

http://technet.microsoft.com/en-us/library/cc262947%28office.12%29.aspx

http://technet.microsoft.com/en-us/library/cc263260%28office.12%29.aspx

[2] –

http://graycloud.com/sharepoint/incoming-mail-configuration-what-permissions-are-require-t39483.html