Event ID - 275

Event Id275
SourceMSExchangeMTA
DescriptionA deferred delivery timer started for message id <message id>, object <object name>. Delivery is scheduled for <object name>. [<value> <value> <value> <value>] (10)
Event InformationAccording to Microsoft:
CAUSE:
To set deferred delivery on messages, in the client, you click Options from the View menu, and then click to select the Do not deliver before <Date> check box. This defers messages by setting the deferred X.400 bit in the message, and they are stored in the MTA until delivery. However, an MTA variable that is responsible for setting up deferred delivery timer is not getting initialized correctly, which results in the timer queue getting sorted incorrectly. Because this variable is not initialized correctly and has different values at different times, it results in the different incorrect behaviors explained in the "Symptoms" section.
WORKAROUND:
To work around this issue, defer messages from the pre-Outlook 2000 client or the Exchange Client by following these steps: • On the File menu, click Properties, click Send Options, click the MS Exchange Server tab, and then click Send this item in <variable> where <variable> can be minutes, hours, days, or weeks.Stopping and restarting the MTA may also causes deferred messages to be delivered.
Reference LinksXCON: Deferred Delivery Issues in Exchange Server 5.5 SP3 MTA

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