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[1538148656] wproc: stderr line 01: Can't canonicalize "./Maildir"
[1538148656] wproc: stderr line 02: ./Maildir/sent: No such file or directory
[1538148656] wproc: stderr line 03: Failed to save message in "./Maildir/sent" - message not sent
[1538148656] wproc: stdout line 01: "./dead.letter" 20/397
My Postfix is working with my current user, I can send email but every time nagios wants to send an email, it doesn't work. I'm pretty sure it's a question of permissions because I did create Maildir on the current user.
I did the following commands and it works fine. The problem is when nagios wants to send notification by himself. Here is the /usr/local/nagios/var/nagios.log :
[1538379482] EXTERNAL COMMAND: SEND_CUSTOM_SVC_NOTIFICATION;kx-poe;Port Ethernet 1/1/48 Link Status;0;Nagios Admin;test
[1538379482] SERVICE NOTIFICATION: nagiosadmin;kx-poe;Port Ethernet 1/1/48 Link Status;CUSTOM (OK);notify-service-by-email;SNMP OK - 1;Nagios Admin;test
[1538379482] wproc: NOTIFY job 0 from worker Core Worker 16102 is a non-check helper but exited with return code 1
[1538379482] wproc: host=kx-poe; service=Port Ethernet 1/1/48 Link Status; contact=nagiosadmin
[1538379482] wproc: early_timeout=0; exited_ok=1; wait_status=256; error_code=0;
[1538379482] wproc: stderr line 01: Can't canonicalize "./Maildir"
[1538379482] wproc: stderr line 02: ./Maildir/sent: No such file or directory
[1538379482] wproc: stderr line 03: Failed to save message in "./Maildir/sent" - message not sent
[1538379482] wproc: stdout line 01: "./dead.letter" 20/396
Did I miss something ? I have the impression that Nagios is using root instead of nagios to send email. Can we change that ?
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = ubuntu-test
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydestination = ubuntu-test, ubuntu-test, localhost.localdomain, localhost
relayhost = [smtp.office365.com]:587
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
home_mailbox = Maildir/
virtual_alias_maps = hash:/etc/postfix/virtual
myorigin = /etc/mailname
# Configuration SMTP
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_use_tls = yes
smtp_tls_security_level = may
smtp_tls_CAfile = /etc/postfix/cacert.pem
sender_canonical_maps = regexp:/etc/postfix/sender_canonical