address rewriting


What is difference between address rewriting on edge transport server and having accepted domain configured and set as reply address under user properties ?

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Address Rewriting: Exchange Address Rewrite is the process of rewriting e-mail addresses for all outgoing messages on a special SMTP virtual server (true for Exchange Server 2003). Exchange Address Rewrite is especially used in merger or acquisition scenarios where two Exchange organizations are to be merged into one but, until these two organizations are completely merged, every organization uses its own SMTP namespace while for all outgoing SMTP messages the new or unique SMTP address space is used.

Accepted Domain: An accepted domain is any SMTP namespace for which a Microsoft Exchange organization sends or receives e-mail. Accepted domains include those domains for which the Exchange organization is authoritative. An Exchange organization is authoritative when it handles mail delivery for recipients in the accepted domain. Accepted domains also include domains for which the Exchange organization receives mail and then relays it to an e-mail server that's outside the Active Directory forest for delivery to the recipient.
long story short address rewriting is when you have to have an email address look differently when leaving your organization

say for example your internal emails are @domain.local but when leaving the company you want them to look like to be able to be replied to

I use it  a lot in migration scenarios specifically between different platforms like exchange and lotus for example to be able to have internal mail flow between the two

accepted domains a will define your email domains that your exchange will accept to receive emails to
aucklandnzAuthor Commented:
Thanks Guys
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