Mail Queue Administration

[Migdiradmin]

How to manage times betwen retires to delivery emails in Mail Queue?
How to get one email back report wen one email stays one Mail Queue for some reason?
Example wen i click in the log i see this, but i dont received one email back reporting!

2020-06-27 16:01:45 [email protected] R=lookuphost T=remote_smtp defer (-44) H=b.mx.email.com [122.122.1222.122]: SMTP error from remote mail server after RCPT TO:<[email protected]>: 450 4.2.0

And how to define the time the email stays in Mail Queue before been deleted?

Regards

 

[Richard G]

Do you really want to change these things. Normally they are setup by default which by RFC guidelines, same as most servers.
Anyway, if you really want to fuzz with it (I would not advise it), it can be found in exim.conf under retry configuration.
Be aware that you might have to configure this in another way, because on an exim.conf update your changes will be overwritten.