Is there a way to send custom warning to all IMAP users?

[francis picabia]

OK, that worked.  From cyradm....

setinfo motd "Email no longer active here.  Please try mynewserver.mydomain.net"


On Mon, Mar 28, 2016 at 2:50 PM, Dan White <dwhite at olp.net> wrote:
> On 03/28/16 14:16 -0300, francis picabia via Info-cyrus wrote:
>>
>> We have migrated all email on a server to a cloud email platform.
>> The users were notified by email beforehand, but hundreds are still
>> connecting to the standard IMAP service.  They may not
>> even remember they have set up devices to connect here.
>> Is there a way to send a custom warning through some setting,
>> similar to how quota warnings are generated.  Really if there is
>> any error I can fake, and customize the message, it would work.
>> We are using Linux, pam authentication, Cyrus with saslauthd.
>>
>> Just shutting down the service is also a solution, but given over 600
>> unique users have logged in today, I'd rather not dump that load on
>> the service desk.
>
>
> You can set a system wide motd, but it's unlikely all clients will honor
> it.
>
> See the cyradm manpage.
>
> --
> Dan White