Vrfyallow, vrfydefault, vrfyhide Channel Options

Responding to SMTP VRFY commands
These channel options control the MTA&#x27;s SMTP server&#x27;s response when a sending SMTP client issues an SMTP VRFY command. The  channel option tells the SMTP server to issue a detailed, informative response. The  option tells the SMTP server to provide a detailed, informative response, unless the TCP/IP-channel-specific option    has been specified. The  option tells the MTA to issue only a vague, ambiguous response. Thus these channel options allow per-channel control of VRFY responses, as opposed to the  TCP/IP-channel-specific option which normally applies to all incoming TCP/IP channels handled via the same SMTP server.

For controlling the MTA&#x27;s SMTP client use of VRFY commands, see the  channel options.

See also:
 * HIDE_VERIFY
 * TCPIP channels
 * domainvrfy Option
 * SMTP and LMTP protocol channel options
 * Channel options