How to increase the mail attachment size at OS level

 

Increase the  message_size_limit at OS level.

 

 

root@vxxxxx postfix]# postconf | grep message_size_limit

 

message_size_limit = 20480000

 

[root@vxxxx postfix]# postconf -e message_size_limit=52428800

[root@vxxxx postfix]# postconf | grep message_size_limit

message_size_limit = 5242880