2.4 KiB
Change mail attachment size
[TOC]
To change mail attachment size, we have to change 3 settings.
Change message size limit in postfix
Postfix is MTA, so we have to change its setting to transfer mail with large attachment.
To allow mail with 100Mb attachment, please change 'message_size_limit' setting like below:
# postconf -e message_size_limit='104857600'
Restart postfix to make it work:
# /etc/init.d/postfix restart
NOTES:
104857600
is 100 (MB) x 1024 (KB) x 1024 (Bit).- Mail will be encoded by mail user agent (Outlook, Thunderbird, etc) before transferred, the actual message size will be larger than 100MB, you can simplily increase above setting to 110Mb or 120Mb to make it work as expected.
If you use mail clients such as Outlook, thunderbird to send mails, it's now ok to sent large attachment with above setting.
Change upload file size in Roundcube webmail
If you have Roundcube webmail, please change two more settings:
Change PHP setting to allow to upload large attachment
You should change memory_limit
, upload_max_filesize
and post_max_size
in
PHP config file /etc/php.ini
- on RHEL/CentOS: it's
/etc/php.ini
- on Debian/Ubuntu, it's
/etc/php5/apache2/php.ini
- on FreeBSD, it's
/usr/local/etc/php.ini
for Apache, or/etc/php5/fpm/php.ini
for Nginx. - on OpenBSD, it's
/etc/php-5.4.ini
. If you're running different PHP release, the version number5.4
will be different.
memory_limit = 200M;
upload_max_filesize = 100M;
post_max_size = 100M;
Change Roundcube webmail settings to allow large attachment
Change same settings in file .htaccess
under roundcube root directory:
- on RHEL/CentOS, it's
/var/www/roundcubemail/.htaccess
- on Debian/Ubuntu, it's
/usr/share/apache2/roundcubemail/.htaccess
- on FreeBSD, it's
/usr/local/www/roundcubemail/.htaccess
- on OpenBSD, it's
/var/www/roundcubemail/.htaccess
Note: this .htaccess
file may not exist on some Linux/BSD distributions,
if it doesn't exist, you can skip this step.
php_value memory_limit 200M
php_value upload_max_filesize 100M
php_value post_max_size 100M
Restart Apache or Nginx web server to make it work.
Change upload size in Nginx
Find setting client_max_body_size
in Nginx config file
/etc/nginx/nginx.conf
, change it to a proper value to match your need.
http {
...
client_max_body_size 100m;
...
}