dovecot - Apr 2015 - Sieve, multiple addresses, and variables

Hi,

I have another sieve question, this time about setting variables.

I join a lot of mailing lists at ietf.org.  I thought it'd be handy to
filter these all into a common folder and then into individual
folders, without having to configure each mailing list independently.

So wrote this (this is just a part, obviously):

require ["envelope", "variables", "date",
"fileinto", "mailbox" ];
     if address :is :domain "to" "ietf.org" {
             if address :matches :localpart "to" "*" {set
"lopart" "${1}";}
             }
      elsif address :is :domain "cc" "ietf.org" {    
            if address :matches :localpart "cc" "*" {set
"lopart" "${1}";}
         }     
      else {set "lopart" "generic-list-box";}
      fileinto :create "ietf.${lopart}-in";
      stop;
  }

Now, this works, unless someone sends a To: line like this:

To: ajs at crankycanuck.ca, listname at ietf.org

The problem in that case is that you _do_ get a match, but the bit "if
address :matches :localpart "to" "*" {set "lopart"
"${1}";}" ends up
putting this in a mailbox ietf.ajs-in, when what is the mailbox
ietf.listname-in.

I thought that

  allof(if address :matches :localpart "to" "*",
  address :matches :localpart "to" "*")
  {set "lopart" "${1}";}, 

would solve this, but it doesn't seem to.  The localpart matching
catches the ajs at crankycanuck.ca address anyway, which surprised me.

Am I dim, am I not understanding something about how to do this, or is
this really impossible?

Thanks,

A

-- 
Andrew Sullivan
ajs at crankycanuck.ca

On 4/7/2015 10:48 PM, Andrew Sullivan wrote:
> Hi,
>
> I have another sieve question, this time about setting variables.
>
> I join a lot of mailing lists at ietf.org.  I thought it'd be handy to
> filter these all into a common folder and then into individual
> folders, without having to configure each mailing list independently.
>
> So wrote this (this is just a part, obviously):
>
> require ["envelope", "variables", "date",
"fileinto", "mailbox" ];
>      if address :is :domain "to" "ietf.org" {
>              if address :matches :localpart "to" "*"
{set "lopart" "${1}";}
>              }
>       elsif address :is :domain "cc" "ietf.org" {    
>             if address :matches :localpart "cc" "*"
{set "lopart" "${1}";}
>          }     
>       else {set "lopart" "generic-list-box";}
>       fileinto :create "ietf.${lopart}-in";
>       stop;
>   }
This script doesn't compile, due to mismatching '}', but I get the
idea.
> Now, this works, unless someone sends a To: line like this:
>
> To: ajs at crankycanuck.ca, listname at ietf.org
>
> The problem in that case is that you _do_ get a match, but the bit "if
> address :matches :localpart "to" "*" {set
"lopart" "${1}";}" ends up
> putting this in a mailbox ietf.ajs-in, when what is the mailbox
> ietf.listname-in.
>
> I thought that
>
>   allof(if address :matches :localpart "to" "*",
>   address :matches :localpart "to" "*")
>   {set "lopart" "${1}";}, 
>
> would solve this, but it doesn't seem to.  The localpart matching
> catches the ajs at crankycanuck.ca address anyway, which surprised me.
This is a bit of a limitation of Sieve. These tests always yield the
first matching address (part) and there is no way to link the tests
based on which address matched previously (logic connectives have no
effect on that either).

In the spirit of your original script, the following would work:


require ["envelope", "variables", "date",
"fileinto", "mailbox"];

if address :matches ["to","cc"] "*@ietf.org" {
    set "lopart" "${1}";
} else {
    set "lopart" "generic-list-box";
}

fileinto :create "ietf.${lopart}-in";


However, since this concerns mailing lists, there is a better, more
reliable way using the List-Id header that the IETF also uses for its
mailing lists:


require ["envelope", "variables", "date",
"fileinto", "mailbox"];

if header :matches "list-id" "*<*.ietf.org>*"  {
    set "listbox" "ietf.${2}-in";
} else {
    set "listbox" "generic-list-box";
}

fileinto :create "${listbox}";

Regards,

Stephan.

On Wed, Apr 08, 2015 at 02:43:51AM +0200, Stephan Bosch
wrote:
> 
> This script doesn't compile, due to mismatching '}', but I get
the idea.
Doh!  Yes, obviously, I copied it from something longer in order to
get an isolated example, but should have checked.  Thanks.
> This is a bit of a limitation of Sieve. These tests always yield the
> first matching address (part) and there is no way to link the tests
> based on which address matched previously (logic connectives have no
> effect on that either).
Got it.  Thanks.
> However, since this concerns mailing lists, there is a better, more
> reliable way using the List-Id header that the IETF also uses for its
> mailing lists:
That was what I originally wanted to do, but of course that doesn't
work when someone does reply-all, I sent the mail, and the list is
configured to suppress duplicates.  I could turn off duplicate
suppression, I suppose, except that the version of pigeonhole in
Ubuntu 14.04 LTS doesn't have the duplicate extension (so I guess it's
slightly older; dovecot --version says 2.2.9).

The more I think about this (or actually, live with it), however, the
less satisfactory the generic answer is anyway, since people often
copy more than one list and I discover I have an opinion about which
one ought to be "primary".  So I think I'll have to go back to a
rule
per list.

Thanks very much for your help, because this is at least allowing me
to learn.

Best regards,

A

-- 
Andrew Sullivan
ajs at crankycanuck.ca