Posts Tagged ‘firewall’

Esxcfg-firewall

Esxcfg-firewall Description: Configures the service console firewall ports Syntax: esxcfg-firewall <options> Options: -q Lists current settings -q <service> Lists settings for the specified service -q incoming|outgoing Lists settings for non-required incoming/outgoing ports -s Lists known services -l Loads current settings -r Resets all options to defaults -e <service> Allows specified service through the firewall (enables) -d <service> Blocks...

Setup Exchange 2007 Firewall Headers

A few months ago email being sent from my company were being rejected by some spam filters. After looking into it I found that exchange 2007 places the internal IP address in the header, which is a private address. Exchange 2007 does this by default. Each time an SMTP email is passed from one server to another, the receiving server records the hand-off in the SMTP headers of the email. This is usually recorded like this: Customers often do not like their internal email infrastructure exposed in the...
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