Here’s a list of the must used TCP & UDP IP ports that you could possibly need to use (or open in your firewall(s)).

TCP port 25 – SMTP
TCP port 26 – SSL secured SMTP
TCP port 110 – Post Office Protocol (POP3)
TCP port 995 – SSL secured POP3
TCP port 143 – Internet Message Access Protocol v. 4 (IMAP4)
TCP port 993 – SSL secured IMAP4
TCP port 80 – HTTP for Outlook Web Access
TCP port 443 – SSL secured HTTP for Outlook Web Access (HTTPS)
TCP/UDP port 389 – Lightweight Directory Access Protocol (LDAP)
TCP port 3268 – LDAP communications with an Active Directory Global Catalog Server
TCP port 119 – Network News Transfer Protocol (NNTP)
TCP port 563 – SSL secured NNTP
TCP port 135 – Remote Procedure Protocol (RPC) however it will also use ports 1024 and up as needed.
TCP/UDP port 53 – Domain Name System (DNS)
TCP port 102 – Mail Transfer Agent (MTA) *Only used in X.400 connections.
TCP/UDP port 88 – Kerberos

Today I’ve installed HP Data Protector 6.0 in my virtual test environment. So we’re going to create a full Exchange Store backup using HP Data Protector.

First off all i’ve installed a Windows 2003 Server with HP Data Protector 6.0. (Note: if you’re using Exchange 2007, install patch DPWIN_307 or later)

After the installation we’re are going to deploy the HP Client to the Exchange 2007 server, for communicating with the Backup server.

The next step is configuring the device for the backup destination. In my situation it’s a backup to disk.

Now the device is created, we can go further with configuring the Exchange full Store backup.

In the next few days i’m going to configure the Exchange 2007 Single Mailbox backup.

Exchange quota information is stored in Active Directory, and by default is cached by Exchange for up to two hours.  This means that it could take up to two hours for a quota change to take effect.  The recommended interval for Exchange to refresh quota information is 20 minutes, which can be set by adding three registry values.
 
- Start the registry editor on your Exchange 2007 Mailbox server
- Locate the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem key.
- Create the “Reread Logon Quotas Interval” value
- Right-click ParametersSystem, select New, and then select DWORD value.
- Name the new DWORD value “Reread Logon Quotas Interval”.
- Right-click Reread Logon Quotas Interval, and then click Modify.
- Enter a decimal value of 1200 seconds (20 minutes)
- Create the “Mailbox Cache Age Limit” value
- Right-click ParametersSystem, select New, and then select DWORD value.
- Name the new DWORD value “Mailbox Cache Age Limit”.
- Right-click Mailbox Cache Age Limit, and then click Modify.
- Enter a decimal value of 20 (20 minutes)

- Locate the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess key.
- Create the “CacheTTLUser” value
- Right-click MSExchange ADAccess, select New, and then select Key.
- Name the new key Instance0.
- Right-click Instance0, select New, and then select DWORD value.
- Name the new DWORD value “CacheTTLUser”.
- Right-click CacheTTLUser, and then click Modify.
- Enter a decimal value of 300 (5 minutes)

Alternately, copy this text file and paste it into a file called MailboxCache.reg, then import it into the registry of each of your Exchange 2007 Mailbox servers

———————————————————————-
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem]
“Reread Logon Quotas Interval”
=dword:000004b0
“Mailbox Cache Age Limit”
=dword:00000014
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0]
“CacheTTLUser”
=dword:0000012cc
———————————————————————-