RCPTCHECK

From Qmail-LDAP Wiki

Check if the recipient (envelope "rcpt to:") of a message really exists. If not give a 550 reject right now instead of bouncing later in qmail-lspawn.

Default:

off

Affects:

qmail-smtpd

Example:

"" (any value will do)

Note:

• Only applies to recipients whose domain is listed in ~control/locals.
• Recipients domains listed in ~control/rcpthosts are allowed, no check will be made.
• If RELAYCLIENT is set, all other recipients are allowed as well.
• Addresses or domains listed in ~control/goodmailaddr are unconditionally allowed in all cases.