Bug #1957. Take two

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3367 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -833,7 +833,10 @@ static int sendmail(char *srcemail, struct ast_vm_user *vmu, int msgnum, char *m
 	time_t t;
 	struct tm tm;
 	struct vm_zone *the_zone = NULL;
-	
+	if (vmu && !ast_strlen_zero(vmu->email)) {
+		ast_log(LOG,WARNING, "E-mail address missing for mailbox [%s].  E-mail will not be sent.\n", vmu->mailbox);
+		return(0);
+	}
 	if (!strcmp(format, "wav49"))
 		format = "WAV";
 	ast_log(LOG_DEBUG, "Attaching file '%s', format '%s', uservm is '%d', global is %d\n", attach, format, attach_user_voicemail, attach_voicemail);