How i can configured Auto Email configuration in Nagios?

[makwanapratikp]

IF any system is in critical / Warning state i should receive email , from Nagios.

[n5047c]

Hello, makwanapratikp.
You should configure contacts, contact groups and notification commands. More info here. Examples here

[makwanapratikp]

want to configure Office365 email in Nagios, so if host in warning stat will email to me.

[makwanapratikp]

Error :-
-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
D9006C0048 486 Wed Feb 7 11:34:55 system@XXXX
(host smtp.office365.com[40.99.31.130] said: 451 5.7.3 STARTTLS is required to send mail [PN2PR01CA0191.INDPRD01.PROD.OUTLOOK.COM 2024-02-07T06:05:06.240Z 08DC26C880F9AD9D] (in reply to MAIL FROM command)) @xxxx

Postfix "main.cf"
relayhost = [smtp.office365.com]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
#smtp_sasl_tls_security_options = encrypt
smtp_tls_security_level = may
#smtp_generic_maps = hash:/etc/postfix/generic
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
#Enable IPv4, and IPv6 if supported
inet_protocols = ipv4