No these are NOT quarantined emails. I found 30 today, we use a SM server as an outgoing delivery server, and 30 of these mails were sitting in the queues, this was sent out by our bulk mail system for delivery, it is sitting with 1 retry attempt but been in the queues for 13d 19Hrs, the others are not even retried and are in the queues for 14 days. I looked in the log files, the mail tried to deliver timed out, retired got to tls negotiation and then nothing further for 14 days..
If you force them to retry or deliver, nothing happens they stay in the queues
Retry is set to 5, 5, 5, 15, 30, 30, 60, 60, 120, 120
header file says
retry: 1;03/11/2015 15:46:34
creationdate: 03/11/2015 15:21:09
Opened mail in spool
Received: from xxx.xxxxxxxxxxx.co.za ([xxx.xx.xx.xx]) by xxxxx.xxxxxxxxx.co.za with Microsoft SMTPSVC(7.5.7601.17514);
Wed, 11 Mar 2015 15:21:07 +0200
Date: Wed, 11 Mar 2015 15:20:02 +0200
From: "xxxxxx" <firstname.lastname@example.org>
Content-Type: multipart/alternative; charset="UTF-8"; boundary="b1_1a5a3166f7fe1c3fb2f5fed1c1b879ad"
X-OriginalArrivalTime: 11 Mar 2015 13:21:07.0285 (UTC) FILETIME=[3B8FE050:01D05BFE]