Sendmail port 25 connection refused while sendmail is running on RHEL

Solution Verified - Updated -

Issue

Sendmail port 25 has connection refused

$ telnet localhost 25
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused

Environment

  • Red Hat Enterprise Linux
  • Sendmail

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