dovecot - Mar 2010 - Writing "sieve" script

This is probably not the best place to ask this question; however, I
figured I had to start somewhere.

I want to write a sieve script that can sort incoming mail into
specific locations.

EXAMPLE:

require ["fileinto"];
if header :contains "X-Virus-Status" "Infected" {fileinto
"SPAM"; stop;}
elsif header :contains "X-SpamCop-Disposition" "Blocked"
{fileinto "SPAM"; stop;}
elsif address :contains "To" "user1 at domain.com" {fileinto
"INBOX.user1";}
elsif address :contains "To" "user2 at domain.com" {fileinto
"INBOX.user2";}
elsif address :contains "To" "user3 at domain.com" {fileinto
"INBOX.user3";}
# The rest goes into INBOX
# The default is "implicit keep", we do it here explicitly
else {keep;}

This works fine unless user1, user2 and or user3 are all included in
the same e-mail address. It is rare; however, it does happen. In that
case, a separate message for each recipient would be delivered to the
first matching mailbox. The other recipients would not receive any traffic at
all.

I am new at writing sieve scripts, and have not come up with any way of
preventing this from happening. If anyone has a suggestion, I would
love to hear it. Even the examples I found by Googling were not really
informative.


-- 
Jerry
Dovecot.user at seibercom.net

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__________________________________________________________________

"Glory is fleeting, but obscurity is forever." - Napoleon Bonaparte

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On Tue, 23 Mar 2010, Jerry wrote:
> require ["fileinto"];
> if header :contains "X-Virus-Status" "Infected"
{fileinto "SPAM"; stop;}
> elsif header :contains "X-SpamCop-Disposition"
"Blocked" {fileinto "SPAM"; stop;}
> elsif address :contains "To" "user1 at domain.com"
{fileinto "INBOX.user1";}
> elsif address :contains "To" "user2 at domain.com"
{fileinto "INBOX.user2";}
> elsif address :contains "To" "user3 at domain.com"
{fileinto "INBOX.user3";}
> # The rest goes into INBOX
> # The default is "implicit keep", we do it here explicitly
> else {keep;}
>
> This works fine unless user1, user2 and or user3 are all included in
> the same e-mail address. It is rare; however, it does happen. In that
> case, a separate message for each recipient would be delivered to the
> first matching mailbox. The other recipients would not receive any traffic
at all.
Is this a catch-all mail account so that a single account receives 
messages for user1, ...,& user3?

If so, you have a logical error in the program flow:

if user1 then
 	fileinto
else if user2 then
 	fileinto
else if ....
end if

when the first condition matches, the second will never tried.

hence:

if header :contains "X-Virus-Status" "Infected" {fileinto
"SPAM"; stop;}
elsif header :contains "X-SpamCop-Disposition" "Blocked"
{fileinto "SPAM"; stop;}
else {
 	if address :contains "To" "user1 at domain.com" {fileinto
"INBOX.user1";}
 	if address :contains "To" "user2 at domain.com" {fileinto
"INBOX.user2";}
 	if address :contains "To" "user3 at domain.com" {fileinto
"INBOX.user3";}
 	# The rest goes into INBOX
}

if the implicit keep does not work, you need to add another "if", e.g.

 	if not address :contains "To" [ "user3 at domain.com",
"user2 at domain.com","user1 at domain.com"] {
 		keep;
 	}

Regards,

- -- 
Steffen Kaiser
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