Collapse "fgrep | egrep | sed" down to a single sed.

This also trims extraneous commas from domain names.

MFC after:	7 days

etc/periodic/daily/460.status-mail-rejects

@@ -51,9 +51,7 @@ case "$daily_status_mail_rejects_enable" in
 		done
 		cat /var/log/maillog
 	    } |
-		fgrep 'reject=' |
-		egrep -e "^$start.*ruleset=check_[^[:space:]]+,[[:space:]]+arg1=(<[^@]+@)?([^>,]+).*reject=.*" |
-		sed -e 's/.*arg1=//' -e 's/.*@//' -e 's/[>[:space:]].*$//' |
+		sed -n -E "s/^$start"'.*ruleset=check_[^ 	]+,[ 	]+arg1=(<[^@]+@)?([^>,]+).*reject=.*/\2/p' |
 		sort -f | uniq -ic | sort -fnr | tee /dev/stderr | wc -l)
 	    [ $rc -gt 0 ] && rc=1
 	fi;;