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Exchange/Outlook 2010, domain environment.<br />
To reproduce: <br />
Outlook -&gt; New Email -&gt; Click on &quot;To...&quot; -&gt; Type in the email name you're searching for.<br />
It shows up for certain users and doesn't for others. <br />
How can I start troubleshooting?<br />
Thanks,<br />
-Attila
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Exchange/Outlook 2010, domain environment.
To reproduce: 
Outlook -> New Email -> Click on "To..." -> Type in the email name you're searching for.
It shows up for certain users and doesn't for others. 
How can I start troubleshooting?
Thanks,
-Attila

When searching for an existing email in the GAL, it doesn't show up for certain users

An email client, email reader or more formally mail user agent (MUA) is a computer program used to access and manage a user's email. A web application that provides message management, composition, and reception functions is sometimes also considered an email client, but more commonly referred to as webmail.

Internet / Email Software

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.

Outlook

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

Email Software

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.