Courier is managed by Puppet class hcoop::service::mail::courier

1. Notes

• Members authenticate using PAM and therefore read mail as their normal user

• VMail users gain tokens via /etc/courier/get-token and a local modification to the courier authuserdb method

• Default generated Debian dh_parameters are OK as of Debian Stretch (3072 bits)

2. nopag

At least through Debian Stretch, courier needs to run with nopag so that vmail users would have tokens, using the following pam config:

# PAM configuration file for Courier IMAP daemon

#@include common-auth
#@include common-account
#@include common-password
#@include common-session

session         required       pam_afs_session.so debug nopag always_aklog
auth            required       pam_krb5.so debug
auth            required       pam_afs_session.so debug nopag always_aklog
account         required       pam_krb5.so

Using standard PAM config seems to work in some cases, but fails most of the time.

CategorySystemAdministration