helo: tweak POD language
also mention the connection notes in the POD
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@ -10,7 +10,10 @@ Validate the HELO hostname. This plugin includes a suite of optional tests,
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selectable by the I<policy> setting. The policy section details which tests
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selectable by the I<policy> setting. The policy section details which tests
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are enforced by each policy option.
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are enforced by each policy option.
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This plugin adds an X-HELO header with the HELO hostname to the message.
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It sets the connection notes helo_forward_match and helo_reverse_match when
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I<policy rfc> or I<policy strict> are used.
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Adds an X-HELO header with the HELO hostname to the message.
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Using I<policy rfc> will reject a very large portion of the spam from hosts
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Using I<policy rfc> will reject a very large portion of the spam from hosts
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that have yet to get blacklisted.
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that have yet to get blacklisted.
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@ -112,7 +115,7 @@ support and the prevention of forged localhost and forged IP literals.
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=head3 rfc
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=head3 rfc
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Per RFC 2821, the HELO hostname must be the FQDN of the sending server or an
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Per RFC 2821, the HELO hostname is the FQDN of the sending server or an
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address literal. When I<policy rfc> is selected, all the lenient checks and
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address literal. When I<policy rfc> is selected, all the lenient checks and
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the following are enforced: is_plain_ip, is_not_fqdn, no_forward_dns, and
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the following are enforced: is_plain_ip, is_not_fqdn, no_forward_dns, and
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no_reverse_dns.
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no_reverse_dns.
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