Unable to access website through squid. Squid shows error "TCP_MISS/503" in access log?

Solution Verified - Updated -

Issue

  • Squid "TCP_MISS/503" error?
  • Squid is unable to access website. Access logs of squid showing "TCP_MISS/503" error.

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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