PMDF System Manager's Guide


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2.3.4.36 Responding to SMTP VRFY Commands (vrfyallow, vrfydefault, vrfyhide)

These keywords control the PMDF SMTP server's response when a sending SMTP client issues an SMTP VRFY command. The vrfyallow keyword tells PMDF to issue a detailed, informative response. The vrfydefault tells PMDF to provide a detailed, informative response, unless the channel option HIDE_VERIFY=1 has been specified, as discussed in Section 21.1.2.2. The vrfyhide keyword tells PMDF to issue only a vague, ambiguous response. Thus these keywords allow per-channel control of VRFY responses, as opposed to the HIDE_VERIFY option which normally applies to all incoming TCP/IP channels handled via the same SMTP server.


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