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Postfix: The Definitive Guide by Kyle D. Dent

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Name

masquerade_domains

Possible values:

domains

Default:

(null)

Address masquerading hides the names of internal hosts by stripping internal hostnames off before messages are sent out from a gateway system. The masquerade_domains parameter specifies a list of domains that should be subject to address masquerading.

Example:

masquerade_domains = example.com

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