Is it necessary to apply the email address policy configured in Exchange 2010?

Hello, the recipient must have an email address. An email address policy generates a primary and secondary email address for recipients so that they can receive and send email.

By default, Exchange includes email address policies that apply to all mail-enabled users. This default policy designates the recipient's alias as the local part of the email address and makes it.

Use the default accepted domain. The local part of the email address is displayed in the symbol (@

The name of the front. However, you can change how email addresses are displayed. For example, you can specify that the recipient's email address is displayed as .

In addition, if you want to specify a different email address for all or some of your recipients, you can modify the default policy or create a different policy.

You can check out the official documentation for email policies.

It is a data file saved on the machine and has nothing to do with the server. Is OST and Exchange Server updated in both directions? Yes: Did the message be deleted natively, and in Exchange as well?

yes After synchronization] If a message is deleted from the server or there is a problem with the loss of the message, is there a local mail that will also be lost? yes, after syncing

2.If the mailbox size of each user is set to 2 GB on the server, can the maximum OST file of the local machine be 2 GB?[Yes, but the theoretical value of OST and PST is up to 20GB].

3.Is it possible to change the mail default data file to a PST file? If I change it, the email on the server will be deleted after receiving the email? 【Yes】How big can a PST file be saved? 【20gb】

4.With the archiving feature in Outlook, you can save messages in PST format. Is it true that after saving to a local pst file, the emails in the server will be deleted?

Yes] I tried, the OST file and the mailbox usage space have not changed, why? [OST does not shrink automatically after deleting a message; Exchange mailboxes will automatically save deleted messages, and the default setting is 14 days

5.Is there a difference between the auto-archiving feature and manual archiving? Can I save to the same file? [The difference is automatic vs. manual :), yes].

How many days will default messages be stored in the server? [It depends on whether the server has an archive setting, but there is no by default] Will the email be deleted after expiration? [Depends on the archive settings] depends on whether the number of days the email can be modified, and how to modify it?

You can change it if you set it.,About the setting method.,Search the archive of technet yourself to find it.

Add some points, big brother].

Only know (..)pst) is a personal folder file or (.).ost) is an offline folder file, I don't know if it will be what you call a two-way update, see on the official website of the coremail mail system, imap service can achieve webmail or client and mail server synchronous update.

It is recommended that you go to the forum of 5dmail, there are more technical troubleshooting, I hope it will be useful to you.

First of all, add a new email domain name, the internal domain name is the main email domain, the external email uses the new domain name, and the MX record and reverse resolution are done on the external network.

For internal messages, you can use connectors to restrict and block outgoing messages.