When using multiple email addresses with faxing commas are used between email addresses. The commas must be escaped this change automatically does the escaping so the end user doesn't have to do it.

app/fax/fax_edit.php

@@ -202,6 +202,9 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 			return;
 		}
 
+	//escape the commas with a backslash
+		$fax_email = str_replace(",", "\\,", $fax_email);
+
 	//set the $php_bin
 		//if (file_exists(PHP_BINDIR."/php")) { $php_bin = 'php'; }
 		if (substr(strtoupper(PHP_OS), 0, 3) == "WIN") {
@@ -513,6 +516,9 @@ if (count($_POST)>0 && strlen($_POST["persistformvar"]) == 0) {
 		unset ($prep_statement);
 	}
 
+//remove the backslash
+	$fax_email = str_replace("\\", "", $fax_email);
+
 //set the dialplan_uuid
 	if (strlen($dialplan_uuid) == 0) {
 		$dialplan_uuid = uuid();