DeadUrl: version 8.18.1-r1: SRC_URI: 404 Client Error: Not Found for url: https://ftp.sendmail.org/past-releases/sendmail.8.18.1.tar.gz
  DeadUrl: version 8.18.1-r1: SRC_URI: 404 Client Error: Not Found for url: https://ftp.sendmail.org/past-releases/sendmail.8.18.1.tar.gz.sig