wehub-resource-sync
10 lines
225 B
HTML
10 lines
225 B
HTML
<header>HELO is required</header>
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<center><tt>smtpd_helo_required</tt></center>
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<hr>
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This parameter optionally turns on the requirement that SMTP clients must
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introduce themselves at the beginning of an SMTP session.
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<hr>
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