[Jboss-dev-forums] [Design of Mail Services] - Re: JBoss as web mail server

[<aco...@jb...>]

No we don't.  I'm not sure its useful anyhow.  Most spam I get says its from a valid domain.  Now it would be possible (theoretically) to use the header to check that the ip indeed belonged to that host but no way you're achieving #1 if you do that and I'm sure it would block certain types of legitimately relayed mail (internal corporate SMTP->ISP SMTP where the internal is not accessible from the outside).

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