Listserv- Solution to Error: "5.1.1 illegal or unknown alias"

Problem

  • Receiving error "5.1.1 illegal or unknown alias" when sending to a list
  • This error typically indicates that the mail server cannot find the recipient you entered

Resolution

  1. Contact the ITS Help Desk (link)

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Cause

  • There may have been an error when ITS created the list
  • You are incorrectly typing the list email address

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