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Great info. &nbsp;Thank you both !
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Greetings.<br />
<br />
We have an internet outage at the moment.<br />
<br />
We have an Exchange 2010 SP3 on-premises server.<br />
<br />
All users are configured with cached Exchange mode.<br />
<br />
Since they are not really working &quot;offline&quot;, when they send external mail, it goes into their Sent Items folder. &nbsp;I know those messages go to the Queue, but I don't know how many retries to send them will occur. &nbsp;Do they just stay there forever until internet service is restored ?<br />
<br />
Thanks much.<br />
-Stephen
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Greetings.

We have an internet outage at the moment.

We have an Exchange 2010 SP3 on-premises server.

All users are configured with cached Exchange mode.

Since they are not really working "offline", when they send external mail, it goes into their Sent Items folder.  I know those messages go to the Queue, but I don't know how many retries to send them will occur.  Do they just stay there forever until internet service is restored ?

Thanks much.
-Stephen

Exchange 2010 Sent mail question - simple

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

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

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.