Modifying Email Quota

Cache your kadmin crdentials:

KRB5_CC=$(mktemp)
kinit whatever/admin
kinit -S kadmin/admin -c $KRB5_CC whatever/admin

To administer the mail account settings:

 /usr/bin/cyradm --auth gssapi --server sedna.astro.columbia.edu

List current quota:

sedna.astro.columbia.edu> lq user.'user account'
 STORAGE 73266/1000000 (7.3266%)

Set new quota:

sedna.astro.columbia.edu> setquota user.'user account' 2000000
quota:2000000
sedna.astro.columbia.edu> lq user.'user account'
 STORAGE 73266/2000000 (3.6633%)
sedna.astro.columbia.edu>

Clear admin credentials:

kdestroy -c $KRB5_CC

Modifying Global Email Message Size limitation

The maximum file size for emails is set to approx. 50mb. To modify this valuse, edit the 'message_size_limit = 52428800' value in the /etc/postfix/main.cf file.

Modifying Disk Space Quota