Backup Mail Exchanger

[vixon]

Hello,

I have a question about "Backup Mail Exchanger".

-Mail will be held until a lower number mail exchanger is available.

So, how long will these emails be held ?

Is that configured by Exim parameter: timeout_frozen_after = 4d ?

[vixon]

Or by exim's retry configuration:

F,2h,15m; G,16h,1h,1.5; F,4d,8h

4 days and mails will be deleted from the queue ?