Srcpt_auth_sender
R$*				$: $1 $| $>ParseRecipient $1
R$* $| $+ < @ $* >		$: $1 $| $2 < @ $3 > $| $>SearchList <!RcptAuthReq> $| <E:$2@$3> <F:$2@$3> <U:$2@> <D:$3> <> 
R$* $| $+ < @ $* > $| < No >	$@ $1
R$* $| $+ < @ $* > $| < Yes >	$: $1 $| $2 < @ $3 > $| $&{auth_authen} $|
R$* $| $+ < @ $* > $| $|	$#error $@ 5.7.1 $: "550 You are required to authenticate to send email to "<$2@$3>
R$* $| $+ < @ $* > $| $* 	$: $1 $| $2 < @ $3 > $| $>SearchList <!RcptAuth> $| <E:$2@$3> <F:$2@$3> <U:$2@> <D:$3> <> 
R$* $| $+ < @ $* > $| <?>	$@ $1
R$* $| $+ < @ $* > $| < $* $&{auth_authen} $* > < >	$@ $1
R$* $| $+ < @ $* > $| $*	$#error $@ 5.7.1 $: "550 Required authentication to send email to "<$2@$3>" is incorrect"
R$* $| $+ < @ $* > $*		$@ $1