Docker-mailserver: Blackhole Email-Address

[Fahrenholz]

Is there a way to define an email-adress which routes all incoming mails to /dev/null? I only see the possibility to prevent an email-address from receiving mails, but that generates an error-message returning to the sender.

[johansmitsnl]

There is no such address available. You could set up a sieve rule on the account that drops the email.

[mindrunner]

I would like to know more about the sieve rule to achieve this.

[erik-wramner]

Anyone? This is something we should add to the FAQ as it may be useful to others.

[DuncanvR]

Looking at the documentation of Sieve and the wiki page on filters, I believe you could do it by adding a dummy account ([email protected]) and then creating the /var/mail/domain.com/dummy/.dovecot.sieve file simply containing:

discard;

That wiki page also describes global filters though, meaning you might not even need to create the dummy account in the first place. I haven't tested this, but I think if you make config/before.dovecot.sieve contain the following, it should work.

if address :matches "to" "[email protected]"
{
    discard;
}

[mindrunner]

Can't we just use 'DISCARD' instead of 'REJECT' in the postfix virtual config?

[erik-wramner]

I would be vary of doing that as it would affect all installations and it is a big change in behavior. We could add an environment option to control it though. Or even today I think it can be changed in the override file?

[m-a-v]

@Fahrenholz, I think this is already handled in the FAQ.

https://github.com/tomav/docker-mailserver/wiki/FAQ-and-Tips#how-can-i-delete-all-the-e-mails-for-a-specific-user

[erik-wramner]

It sure looks like that. @Fahrenholz can we close?

[Fahrenholz]

Sorry, yes