How to disable AUTH GSSAPI for sendmail?

Solution Verified - Updated -

Issue

# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 localhost.localdomain ESMTP Sendmail 8.14.7/8.13.8/MAILclnt/5.10/$Rev: 20722 $; Tue, 30 Aug 2022 13:28:25 -0400
EHLO localhost.localdomain
250-localhost.localdomain Hello localhost [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-AUTH GSSAPI         <----- How to disable this?
250-DELIVERBY
250 HELP

Environment

  • Red Hat Enterprise Linux (RHEL) 7
  • Red Hat Enterprise Linux (RHEL) 8
  • sendmail

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