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I keep getting this error message everytime I attempt to send to a particular user. &nbsp;The bounce back will occur anywhere between 10 min. to 6 hours.<br />
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How do I resolve issue?
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I keep getting this error message everytime I attempt to send to a particular user.  The bounce back will occur anywhere between 10 min. to 6 hours.

How do I resolve issue?

Email issue:  4.0.0 smtp; temporary local problem - please retry

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.

Email Clients

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.