Blank Subject Line RRS feed

  • Question

  • Hello,

    I have Exchange 2013 Co-Exist with Exchange 2007. I'm planning to create a "Transport Rule" to give me NDR when "Blank Subject Line" is detected.

    Monday, October 21, 2013 6:25 PM


All replies

  • Please let us know how it goes.

    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

    Tuesday, October 22, 2013 1:50 AM
  • Ed,

    When a user create an email without subject, I would like that email to bounce back with NDR saying that email subject line is blank and cannot be send.

    Tuesday, October 22, 2013 3:22 PM
  • Hello,

    Based on my known, I'm afraid that there is no related transport rule predicates to realize your goal.

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    • Edited by cara chen Wednesday, October 23, 2013 2:02 AM edit
    • Marked as answer by cara chen Monday, October 28, 2013 8:27 AM
    Wednesday, October 23, 2013 2:02 AM
  • http://technet.microsoft.com/en-us/library/bb430785%28v=exchg.141%29.aspx

    The ^$ Regular Expression:

    To detect messages that have blank subject lines, the following procedures use the ^$ regular expression. This regular expression consists of two pattern strings, ^ and $. Pattern strings are used in regular expressions to match patterns in text that can vary. When the ^ and $ pattern strings are used in this order, the transport rule condition matches only the exact string that's between the two pattern strings. Because there's no string between the ^ and $ pattern strings in the ^$ regular expression, it matches only an empty string, such as a blank subject line.
    • Proposed as answer by sSupermarine Wednesday, July 30, 2014 8:08 PM
    Wednesday, July 30, 2014 8:08 PM