Catch all for dovecot authentication?

[Marc Roos]

I have the same, create your own dns blacklist. And have fail2ban add 
entries to it. The only problem I have on CentOS6 is that you need to 
combine log files for this, but it should be do-able.

But I am also for this option, maybe it can be done via this userdb, 
specify an account where auth is not necessary. I would like to redirect 
sometimes a user to a 5GB garbage messages mailbox. Or if someone has 
collection of emails with virusses, available to download?



-----Original Message-----
From: Tobi via dovecot [mailto:dovecot at dovecot.org] 
Sent: donderdag 23 mei 2019 9:12
To: dovecot at dovecot.org
Subject: Catch all for dovecot authentication?

Hi

I'm aware that there are several good reasons not to do what I want, but 
in my use-case it would be an interesting feature. So please no 
discussions about the reasonableness

I have some spamtrap SMTP servers (postfix). Currently SMTP AUTH is 
disabled. But as I daily have thousands of AUTH tries I thought it would 
be nice to be able to accept any AUTH request from postfix in dovecot.

Is something like this possible with dovecot? If so any good description 
available on how to achieve?

Thanks

--

tobi