A user has send a e-mail to company x. The user from company x has received the e-mail. But he does get this e-mail now like every hour.
I have checked the message with message tracking on my Ironport. I see in the log that the message keeps retraying. But like before, the message is already deliverd. Somehow the Ironport probley thinks it is not deliverd yet.
You might want to open a support case on this issue with the version you are currently running. The logs you have retrieved indicate that there was network issue/error while delivering the message and this was re queued for delivery. Support would be helpful in running additional debug and packet captures to trace this issue.
Fixed: Messages with Footers Sent Multiple Times Previously, when the IronPort appliance added a footer to an outgoing HTML message, the message may be sent to the recipient multiple times. This occurred because the IronPort appliance failed to escape leading dots as required by the SMTP protocol, resulting in a partial message being sent. In some cases, the appliance failed to see the response from the remote server and resent the message. This issue has been resolved. The appliance correctly escapes dots when it adds a footer and outgoing messages are not truncated. [Defect ID: 41255]
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