we are running a Groupwise 2014 R2 SP1 Server. To restrict the mail traffic we are using class of service in the GWIA.
No external mail recipients are allowed except to company1.com.
These is working fine if the user is using a Groupwise mail client.
We also use for example Thunderbird or other mail clients to connect to the Groupwise Server (via IMAP and SMTP).
Here I found out that the restriction in my example above is not working.
Are the class of service not working if you are using an mail client that is connected via IMAP and SMTP?
However, are you using a specifically named Class of Service or the Default Class of Service? I'd suggest a specifically named one that includes the people who will use POP3 and/or IMAP and make sure that the SMTP host that the IMAP/POP client uses is the GWIA.
I'm not sure if you can make the GWIA COS settings apply and subsequently block or allow like you want though.