Masalah Pengiriman Email pada OwnCloud

Salah satu virtual server OwnCloud yang digunakan oleh Excellent mengalami kendala saat mengirimkan email notifikasi, misalnya notifikasi untuk informasi share dokumen. Saat dicheck via Apache status, hasilnya adalah sebagai berikut :

owncloud-logo

cloud:~ # service apache2 status
apache2.service – The Apache Webserver
Loaded: loaded (/usr/lib/systemd/system/apache2.service; enabled)
Active: active (running) since Fri 2014-11-21 11:48:57 WIB; 12h ago
Main PID: 844 (httpd2-prefork)
Status: “Total requests: 0; Current requests/sec: 0; Current traffic: 0 B/sec”
CGroup: /system.slice/apache2.service
|- 844 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 4183 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 4197 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 4212 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 4248 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 5203 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 5820 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 6610 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|- 6812 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|-11161 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|-11162 /usr/sbin/httpd2-prefork -f /etc/apache2/httpd.conf -D SYSTEMD -DFOREGROUND -k start
|-11194 /usr/sbin/sendmail -t -i -oi -fsharing-noreply@cloud.excellent.co.id -t
`-11195 /usr/sbin/postdrop -r

Nov 21 23:51:06 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/846358.11195: Permission denied
Nov 21 23:51:16 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/846622.11195: Permission denied
Nov 21 23:51:26 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/846870.11195: Permission denied
Nov 21 23:51:36 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/847103.11195: Permission denied
Nov 21 23:51:46 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/847342.11195: Permission denied
Nov 21 23:51:56 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/847590.11195: Permission denied
Nov 21 23:52:06 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/847835.11195: Permission denied
Nov 21 23:52:16 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/848106.11195: Permission denied
Nov 21 23:52:26 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/848396.11195: Permission denied
Nov 21 23:52:36 cloud postfix/postdrop[11195]: warning: mail_queue_enter: create file maildrop/848672.11195: Permission denied

Hal ini terjadi karena hak akses postdrop dan postqueue dari engine Postfix tidak memiliki hak akses sebagaimana mestinya. Jika dicheck dengan perintah :

postfix check

Hasilnya adalah :

cloud:~ # postfix check
postfix/postfix-script: warning: not owned by group maildrop: /usr/sbin/postqueue
postfix/postfix-script: warning: not owned by group maildrop: /usr/sbin/postdrop
postfix/postfix-script: warning: not set-gid or not owner+group+world executable: /usr/sbin/postqueue
postfix/postfix-script: warning: not set-gid or not owner+group+world executable: /usr/sbin/postdrop

Untuk mengatasi hal ini, lakukan perintah berikut (jangan lupa sesuaikan posisi path folder masing-masing) :

chgrp maildrop /usr/sbin/postqueue
chgrp maildrop /usr/sbin/postdrop
chmod g+s /usr/sbin/postqueue
chmod g+s /usr/sbin/postdrop
systemctl start postfix
postfix check
service apache2 restart
service apache2 status

Setelah dilakukan penyesuaian folder dan hak akses, email bisa lancar dikirimkan dan notifikasi masuk inbox email dengan baik.

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