Re: [sieve] Restrict redirects to own domain only

[Ralph Seichter]

On 16.10.2018 15:43, Yassine Chaouche wrote:

> I don't fully understand how could this prevent them from forwarding
> to any other domain by other means, for example by using a managesieve-
> able client

Well, your OP made no mention of your environment. ;-) You posted on the
Dovecot mailing list, so I suppose we know what your IMAP server is, but
you mentioned nothing beyond that.

I made the assumption that your users are allowed to use sieve, based on
the subject line, but you did not elaborate on how they use it. Simplest
form: Sieve files. If you generate the files, you can screen the content
and also keep them read-only for users.

If you have important restrictions/conditions, you need to mention them
to us.

-Ralph

Re: [sieve] Restrict redirects to own domain only

[Yassine Chaouche]

Thanks Ralph but I don't fully understand how could this prevent them 
from forwarding to any other domain by other means, for example by using 
a managesieve-able client


Yassine.


On 10/16/18 12:37, Ralph Seichter wrote:

On 16.10.18 12:48, Yassine Chaouche wrote:


I'd like to let my colleagues redirect mail automatically (via a sieve
filter) to other mailboxes within the same domain, but deny redirects
to outside domains [...] Ideas ?

Set up a simple internal web application or some other mechanism that
allows your colleagues to enter the local address part for forwarding
only. Use backend logic to generate a sieve script containing

   redirect :copy "localp...@yourdomain.tld";

or whatever suits your needs.

-Ralph

Re: [sieve] Restrict redirects to own domain only

[Ralph Seichter]

On 16.10.18 12:48, Yassine Chaouche wrote:

> I'd like to let my colleagues redirect mail automatically (via a sieve
> filter) to other mailboxes within the same domain, but deny redirects
> to outside domains [...] Ideas ?

Set up a simple internal web application or some other mechanism that
allows your colleagues to enter the local address part for forwarding
only. Use backend logic to generate a sieve script containing

  redirect :copy "localp...@yourdomain.tld";

or whatever suits your needs.

-Ralph

[sieve] Restrict redirects to own domain only

[Yassine Chaouche]

Hello list,

I'd like to let my colleagues redirect mail automatically (via a sieve
filter) to other mailboxes within the same domain, but deny redirects to
outside domains (gmail, yahoo etc.) since this could lead to blacklisting
(forwarding spam for example).

If I set sieve_max_redirect to 0 then no redirect is allowed, at all. I
wish to let redirects to internal mailboxes still possible. Ideas ?

Yassine.