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Dear All,<br />
<br />
&nbsp; &nbsp;I have a user who have a mailbox in my exchange 2003 server, sometines when someone internally send him a message he does not receive the message, I have checked exchange MTC ( message tracking center) &nbsp;its says that the message was delivered locally, when we resend the message he receives it with no issues, no outlook rules are configured in his outlook. this happned twice from two different users sending to same user, can someone advise in why this happeded.<br />
<br />
Thanks
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Dear All,

   I have a user who have a mailbox in my exchange 2003 server, sometines when someone internally send him a message he does not receive the message, I have checked exchange MTC ( message tracking center)  its says that the message was delivered locally, when we resend the message he receives it with no issues, no outlook rules are configured in his outlook. this happned twice from two different users sending to same user, can someone advise in why this happeded.

Thanks

Exchange 2003 internal Message Delivery

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Email Protocols

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.