Version 4.1.2

applications/nexus/sources/Support/Reply.php

@@ -294,7 +294,7 @@ class _Reply extends \IPS\Content\Comment implements \IPS\Content\Hideable
 				if ( !in_array( $staffId, $sentTo ) and ( $this->item()->department->staff === '*' or in_array( $staffId, explode( ',', $this->item()->department->staff ) ) ) )
 				{
 					$email = \IPS\Email::buildFromTemplate( 'nexus', $this->type === static::REPLY_HIDDEN ? 'staffNotifyNote' : 'staffNotifyReply', array( $this ) );
-					$email->from = $this->item()->department->email;
+					$email->from = ( $this->item()->department->email ) ? $this->item()->department->email : \IPS\Settings::i()->email_out;
 					switch ( \IPS\Settings::i()->nexus_sout_from )
 					{
 						case 'staff':