dovecot - Aug 2009 - Redirecting mail gives 'mail forwarding loop' to the sender - calling for sieve help

Greetings, i am testing:

- dovecot-1.2-sieve-0.1.11
- dovecot 1.2.3
- dovecot-1.2-managesieve-0.11.8 (with patch)

I am trying to use sieve_after to execute some redirection of mails.

I have put in the after script:

require "include";
require "fileinto";

if header :contains ["To","Cc"] "userA at
acasalud.com.ar"
{
   keep;
   redirect "userB at acasalud.com.ar";
}

The redirection works but the sender user (userA) get the following error:

This is the mail system at host acamail.acasalud.com.ar.

I'm sorry to have to inform you that your message
could not
be delivered to one or more recipients. It's
attached below.

                   The mail system

<userB at acasalud.com.ar
<http://10.11.0.21/webmail/src/compose.php?send_to=ayacopino%40acasalud.com.ar>>:
mail forwarding loop
for userB at acasalud.com.ar
<http://10.11.0.21/webmail/src/compose.php?send_to=ayacopino%40acasalud.com.ar>



Could somebody can help me.

Thanks,

-- 

Andr?s Fernando Yacopino

Andr?s Yacopino wrote:
> Greetings, i am testing:
> 
> - dovecot-1.2-sieve-0.1.11
> - dovecot 1.2.3
> - dovecot-1.2-managesieve-0.11.8 (with patch)
> 
> I am trying to use sieve_after to execute some redirection of mails.
> 
> I have put in the after script:
> 
> require "include";
> require "fileinto";
> 
> if header :contains ["To","Cc"] "userA at
acasalud.com.ar"
> {
>   keep;
>   redirect "userB at acasalud.com.ar";
> }
> 
> The redirection works but the sender user (userA) get the following error:
> 
> This is the mail system at host acamail.acasalud.com.ar.
> 
> I'm sorry to have to inform you that your message
> could not
> be delivered to one or more recipients. It's
> attached below.
> 
>                   The mail system
> 
> <userB at acasalud.com.ar 
>
<http://10.11.0.21/webmail/src/compose.php?send_to=ayacopino%40acasalud.com.ar>>:
> mail forwarding loop
> for userB at acasalud.com.ar 
>
<http://10.11.0.21/webmail/src/compose.php?send_to=ayacopino%40acasalud.com.ar>
> 
> 
> 
> 
> Could somebody can help me.
> 
> Thanks,
> 
	What does your log file says?

	Also, you could cheat and tell it to use copy instead of keep and 
redirect?

On Fri, 2009-08-14 at 17:17 -0300, Andr?s Yacopino
wrote:
> I am trying to use sieve_after to execute some redirection of mails.
> 
> I have put in the after script:
> 
> require "include";
> require "fileinto";
> 
> if header :contains ["To","Cc"] "userA at
acasalud.com.ar"
> {
>    keep;
>    redirect "userB at acasalud.com.ar";
> }
So that's a global script, right?
> The redirection works but the sender user (userA) get the following error:
..
> <userB at acasalud.com.ar
<http://10.11.0.21/webmail/src/compose.php?send_to=ayacopino%40acasalud.com.ar>>:
mail forwarding loop
I suppose it's because when usera sends to userb, userb executes the
global script again and the mail is redirected to userb again, which
triggers the loop detection. Either disable after script from userb or
add some check there so that it doesn't get redirected again.
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Yes, that is a global script.
Yes you are the right , the script is executed again but i thought that 
this line do the verification to avoid this:

if header :contains ["To","Cc"] "userA at
acasalud.com.ar"

It seems it didnt' but why?, can you explain better?

Thanks a lot,

Andr?s Fernando Yacopino



Timo Sirainen escribi?:
> On Fri, 2009-08-14 at 17:17 -0300, Andr?s Yacopino wrote:
>   
>> I am trying to use sieve_after to execute some redirection of mails.
>>
>> I have put in the after script:
>>
>> require "include";
>> require "fileinto";
>>
>> if header :contains ["To","Cc"] "userA at
acasalud.com.ar"
>> {
>>    keep;
>>    redirect "userB at acasalud.com.ar";
>> }
>>     
>
> So that's a global script, right?
>
>   
>> The redirection works but the sender user (userA) get the following
error:
>>     
> ..
>   
>> <userB at acasalud.com.ar
<http://10.11.0.21/webmail/src/compose.php?send_to=ayacopino%40acasalud.com.ar>>:
mail forwarding loop
>>     
>
> I suppose it's because when usera sends to userb, userb executes the
> global script again and the mail is redirected to userb again, which
> triggers the loop detection. Either disable after script from userb or
> add some check there so that it doesn't get redirected again.
>

Yes, the configuration seems odd or interesting as you said.
 The
idea behind this is:
 
 - Before scripts will be use for
filtering spam, when they have SPAM
 header. Not problem at it.


 - User scripts will be used for vacation messages. These are
created
 with Squirrelmail and avelsize plugin (user interaction)
 
 - After scripts will be used for doing redirections, such as
 forwarding mail to a blackberry account(not problem at it) or

forwarding to another user account (in the same domain, the problem is
 here).
 
 The reason not to put the redirections or
forwarding in users scripts
 is to avoid users deleting redirections
and have in one file all the
 redirections.
 
 I also try
to use redirections from avelsieve plugin (0.9.9.9) and it
 works the
forwarding but it didn't work the keep command, the mail is

forwarded but the user doesn't have a copy of it.
 
 I will
investigate your advice for envelope or try to use user's scripts.


 I didn't know about original headers, if this in RFC sieve
documents?
 
 Thanks Timo and thanks Stephan for the tips.


 Greetings,
 
 Andr?s.


Andr?s
Yacopino.
Dpto Sistemas
AcaSalud