ALLOW REJECTIONS BEFORE DEFERRAL

TCP/IP-channel-specific options: ALLOW_REJECTIONS_BEFORE_DEFERRAL (integer)
This SMTP server option sets a limit on the number of bad (failing) RCPT TO: or VRFY: addresses that will be allowed during a  single session. (Note that unlike    and     where the RCPT TO: and VRFY: counts  are separate, this is a combined count; failing RCPT TO:&#x27;s and  VRFY:&#x27;s are added together.) That is, after the specified number of To:  addresses have been rejected at the RCPT TO: or at VRFY:, all  subsequent recipients, good or bad, will be rejected at their RCPT TO:  presentations with a temporary error 451 4.5.3 Too many rejections; try again later or at VRFY: presentations with a temporary error 451 4.5.3 Verification blocked; too many rejections The default is (essentially) no limit. See also the   channel option.

Compare this option with the    TCP/IP-channel-specific option,  which will cause all recipients to be rejected at the DATA  command with a temporary error 451 4.5.3 Transaction blocked; too many recipients specified

See also:
 * ALLOW_RECIPIENTS_PER_TRANSACTION
 * REJECT_RECIPIENTS_PER_TRANSACTION
 * deferralrejectlimit Option
 * TCPIP-channel-specific options