Delivery has failed to these recipients or groups:

Hi,

An user from my job has this delivered msg:

Diagnostic information for administrators:

Generating server: domain.domain.local

#550 4.4.7 QUEUE.Expired; message expired ##

Original message headers:

Received: from domain.domain.local ([fe80::dc4b:6a44:4222:e7ab]) by

 domain.domain.local ([fe80::dc4b:6a44:4222:e7ab%12]) with mapi id

 14.03.0123.003; Wed, 8 Nov 2017 14:35:04 -0300

From: =?iso-8859-1?Q?user?= <>

To: "" <>

Subject: 

Thread-Topic: 

Thread-Index: AdNYt1F80JhYrxmeT/KP7Kf5NIeDJg==

Date: Wed, 8 Nov 2017 17:35:04 +0000

Message-ID: <*** Email address is removed for privacy ***>

Accept-Language: en-US

Content-Language: es-ES

X-MS-Has-Attach: yes

X-MS-TNEF-Correlator:

x-originating-ip: [10.10.10.188]

Content-Type: multipart/related;

        boundary="_004_94791A58E79EFB4F921609F285805C91B3AB6AF2HUAYRACAEDOMloc_";

        type="multipart/alternative"

MIME-Version: 1.0

Any thoughts? Thanks in advance to all!