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Code Fix: Destination users not receiving Task Notification e-mails when a large number of workflow instances are running

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Issue Description

When starting a large number of workflow instances, destination users occasionally do not receive their Task Notification e-mail. An error is logged in the Host Server log file stating that “The specified string is not in the form required for an e-mail address”.

Error Message

The following error message is logged in the Host Server log file:

"Error","MessageBus","61007","SendMessageException","MessageBusRuntime","61007 Permanent failure sending message New Task: System.FormatException: The specified string is not in the form required for an e-mail address.
at System.Net.Mail.MailAddressParser.ParseAddress(String data, Boolean expectMultipleAddresses, Int32& index)
at System.Net.Mail.MailAddressParser.ParseAddress(String data)
at System.Net.Mail.MailAddress..ctor(String address, String displayName, Encoding displayNameEncoding)
at SourceCode.MessageBus.Imap.SmtpDestination.ToFullEmail(Dictionary`2 collection)
at SourceCode.MessageBus.Imap.SmtpDestination.Send(String title, MessageExtendedInformation extended, IEnumerable`1 attachments, MessageBodyReader[] messageBodies)
at SourceCode.MessageBus.Server.MessageBusRuntime.SourceCode.MessageBus.IMessageDestination.Send(String title, MessageExtendedInformation extended, IEnumerable`1 attachments, MessageBodyReader[] messageBodies) 

Resolution

  1. Ensure you have K2 Five RTM installed.
  2. Get the K2 Five RTM FP11 from Regional Support.
  3. Install the K2 Five RTM FP11 to apply the fix.