sendmail: Not running with correct effective GID. Is sendmail binary setgid mailtrap?

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sendmail: Not running with correct effective GID. Is sendmail binary setgid mailtrap?

[error above error message shows in login SSH screen directly or you are getting this message]
just change the send mail permission using below command:

chmod 2755 /usr/sbin/sendmail

 

That’s it..:)
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