A message is queued at the Internet Mail Service

[saunders4now]

Hi,
When users in our organization try to send email to a certain company they stay in the IMS queue for up to two days. This problem just began two days ago so I am not sure if these messages will ever be delivered. One user who sent a message got the following reply from our server

From: John Shaw
Sent: Friday, January 18, 2002 6:09 PM
To: Peter Doyle
Subject: Notification: A message is queued at the Internet Mail Service
(EXCHANGE)
Your message
To: stacy@company.com
Subject: FW: default to zero script.
Sent: 1/18/02 2:08:48 PM

is still queued at the Internet Mail Service (EXCHANGE). This message will continue to be retried until the configured maximum timeout period,and if delivery cannot be completed by then, your message will be returned to you.

Does anybody know what this means?
Thanks

 

[ChrisHirst]

The usual cause for this is the SMTP delivery failed to resolve the host name for the MX record for company.com into a IP. Check the DNS cache on your server for an entry pointing to this domain. Mainly this is beyond your control as the host for the domain is responsible for setting up DNS MX records for their mail server. It maybe that they have changed the public IP of their mail server and not changed the MX record or the change has not replicated around the Internet yet, or there could be numerous other reasons. Your only option is to refresh your DNS cache.