Event ID - 4051

Event Id4051
DescriptionA time-out occurred while trying to receive mail from <server> and while waiting for the message body.
Event InformationThe SMTP mail is not received by the Exchange IMC and mail destined for the IMC backs up in queues on the foreign mail system. br>CAUSE:
The Exchange IMC from Service Pack 2 expects a <CRLF>.<CRLF> to delineate the end of mail messages in accordance with RFC821, section 3.1. Prior to Service Pack 2 the Exchange IMC would accept a message terminated with <LF>.<LF>. This change in implementation of the RFC in Service Pack 2 affects many existing Exchange implementations.
Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem was corrected in the latest Microsoft Exchange Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): S E R V P A C K
Many SMTP mail hosts allow for the configuration of this "message termination sequence." Consult the specific SMTP mailers documentation and configure the mailer to use <CRLF>.<CRLF> for this sequence.
Reference LinksXFOR: IMC Not Receiving Inbound Mail from UNIX Hosts

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