Index: usr.sbin/syslogd/syslogd.c
===================================================================
--- usr.sbin/syslogd/syslogd.c
+++ usr.sbin/syslogd/syslogd.c
@@ -477,7 +477,8 @@
 			break;
 		case 'b':
 			bflag = 1;
-			if ((p = strchr(optarg, ':')) == NULL) {
+			if ((p = strchr(optarg, ':')) == NULL ||
+			    strchr(p + 1, ':') != NULL) {
 				/* A hostname or filename only. */
 				addpeer(&(struct peer){
 					.pe_name = optarg,