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I will be implementing an Exchange 2000 server in a new environment.<br />
Right now, mailguard is enabled on the Cisco PIX. &nbsp;<br />
<br />
Does anyone know what this will do if the only mail received on this connector is outside email?<br />
All other instances I have seen have disabled the mailguard feature.<br />
<br />
Should it be disabled or enabled????<br />
<br />
From a Microsoft article:<br />
<a href="http://support.microsoft.com/default.aspx?scid=kb;en-us;q320027" rel="ugc">http://support.microsoft.com/default.aspx?scid=kb;en-us;q320027</a><br />
It says that there may be issues if mailguard is disabled but then goes on to mention only clients that need to authenticate with the ESMTP server.<br />
<br />
This is from a Cisco article:<br />
Note: If you have an ESMTP server behind the PIX, you may need to turn off the Mailguard feature to allow mail to flow properly. Also, doing Telnet to port 25 may not work with the fixup protocol smtp command, especially with a Telnet client that does character mode.<br />
<br />
From the following website:<br />
<a href="http://www.cisco.com/en/US/customer/products/hw/vpndevc/ps2030/products_tech_note09186a00800b2ecb.shtml" rel="ugc">http://www.cisco.com/en/US/customer/products/hw/vpndevc/ps2030/products_tech_note09186a00800b2ecb.shtml</a><br />
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I will be implementing an Exchange 2000 server in a new environment.
Right now, mailguard is enabled on the Cisco PIX.  

Does anyone know what this will do if the only mail received on this connector is outside email?
All other instances I have seen have disabled the mailguard feature.

Should it be disabled or enabled????

From a Microsoft article:
http://support.microsoft.com/default.aspx?scid=kb;en-us;q320027
It says that there may be issues if mailguard is disabled but then goes on to mention only clients that need to authenticate with the ESMTP server.

This is from a Cisco article:
Note: If you have an ESMTP server behind the PIX, you may need to turn off the Mailguard feature to allow mail to flow properly. Also, doing Telnet to port 25 may not work with the fixup protocol smtp command, especially with a Telnet client that does character mode.

From the following website:
http://www.cisco.com/en/US/customer/products/hw/vpndevc/ps2030/products_tech_note09186a00800b2ecb.shtml



Cisco MailGuard and Exchange 2000 - Confusion

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.