Hooking in another process or content_filter?

**marcmac** · 02-14-2006, 01:49 PM

try
chown postfix /opt/zimbra/postfix/sbin/sendmail
chmod u+s /opt/zimbra/postfix/sbin/sendmail

**Dux T** · 02-14-2006, 02:02 PM

Originally Posted by marcmac

try
chown postfix /opt/zimbra/postfix/sbin/sendmail
chmod u+s /opt/zimbra/postfix/sbin/sendmail

Wahoo! Thank you very much marcmac!

**Dux T** · 02-15-2006, 10:44 AM

I spoke too soon! Now the script is stuck in a loop, I tried using zmlmtpinject which seemed to work for local mail only, external mail was not delivered. I modified the script to stop the loop but the mail will not be delivered:

Code:

#!/bin/sh
# System dependent settings
ALTERMIME=/usr/local/bin/altermime
ALTERMIME_DIR=/opt/zimbra/filter/scratch
SENDMAIL=/opt/zimbra/postfix/sbin/sendmail
# Exit codes of commands invoked by Postfix are expected
# to follow the conventions defined in <sysexits.h>.
TEMPFAIL=75
UNAVAILABLE=69
# Change in to alterMIME's working directory and
# notify Postfix if 'cd' fails.
cd $ALTERMIME_DIR || { echo $ALTERMIME_DIR does not exist; exit $TEMPFAIL; }
# Clean up when done or when aborting.
trap "rm -f in.$$" 0 1 2 3 15
# Write mail to a temporary file
# Notify Postfix if this fails
cat >in.$$ || { echo Cannot write to $ALTERMIME_DIR; exit $TEMPFAIL; }
# Call alterMIME, hand over the message and
# tell alterMIME what to do with it
if [ `cat in.$$ | grep X-Copyrighted-Material: | wc -l` -eq 0 ]
then
$ALTERMIME --input=in.$$ \
            --disclaimer=/opt/zimbra/filter/disclaimer.txt \
            --disclaimer-html=/opt/zimbra/filter/disclaimer.html \
            --xheader="X-Copyrighted-Material: Please visit http://www.duxarea.com/disclaimer.html" \
            --htmltoo \
            --force-for-bad-html \
             || \
            { echo Message content rejected; exit $UNAVAILABLE; }
# Call sendmail to reinject the message into Postfix
$SENDMAIL "$@" <in.$$
# Use sendmail's EXIT STATUS to tell Postfix
# how things went.
exit $?
#mv in.$$ /opt/zimbra/postfix/spool/maildrop
#echo "-r $4 -s $2" > log.$$
#/opt/zimbra/bin/zmlmtpinject -r "$4" -s "$2"   in.$$
fi
echo Message has been through already; exit $UNAVAILABLE;

In the sample they created a entry in master.cf for the "external interface"
but I used the 127.0.0.1:10025 entry cause I'm not sure how having the extra entry would effect zimbra
Mine:

Code:

127.0.0.1:10025 inet n  -       n       -       -  smtpd
        -o content_filter=disclaimer:
        -o local_recipient_maps=
        -o virtual_mailbox_maps=
        -o virtual_alias_maps=
        -o relay_recipient_maps=
        -o smtpd_restriction_classes=
        -o smtpd_delay_reject=no
        -o smtpd_client_restrictions=permit_mynetworks,reject
        -o smtpd_helo_restrictions=
        -o smtpd_sender_restrictions=
        -o smtpd_recipient_restrictions=permit_mynetworks,reject
        -o mynetworks_style=host
        -o mynetworks=127.0.0.0/8
        -o strict_rfc821_envelopes=yes  
        -o smtpd_error_sleep_time=0
        -o smtpd_soft_error_limit=1001
        -o smtpd_hard_error_limit=1000
        -o smtpd_client_connection_count_limit=0
        -o smtpd_client_connection_rate_limit=0
        -o receive_override_options=no_header_body_checks,no_unknown_recipient_

Theirs:

Code:

244.233.222.211:smtp inet n  -       n       -       -  smtpd
        -o content_filter=disclaimer:

Here is the bounce message from Postfix:

Code:

This is the Postfix program at host my.zimbradomain.com.

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

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                        The Postfix program

<anonymouse@gmail.com>: service unavailable. Command output: Message has been
    through already

**marcmac** · 02-15-2006, 11:11 AM

here's the problem.

Message path looks like this in zimbra:
source -> postfix:25 -> amavis:10024 -> postfix:10025 -> zcs:7025 (lmtp).

Your script adds this:
source -> postfix:25 -> amavis:10024 -> postfix:10025 -> yourscript

ipe -> postfix:25 -> and back to amavis, etc, etc.

So you'll need to have your script submit back to postfix on another port (10026 is next in the progression) and postfix (in master.cf) will have to have that port set up with no content filter, no alias expansion, etc, etc, to forward on to lmtp.

**Dux T** · 02-16-2006, 01:05 PM

Thanks again.

Here's the whole shabang for anyone else interested (need I say it? "Try at your own risk"):
First Get altermime and install it on your Zimbra box
http://www.pldaniels.com/altermime/
The original putmail.py is located at (no need to download it)
http://putmail.sourceforge.net/home.html
Optionally Joe's Own Editor is at
http://sourceforge.net/projects/joe-editor/
You might be able to use

Code:

yum install joe

I use joe to edit text files, you can use vi, nano, joe or whatever you like to edit yours

SSH into your zimbra box As root and download this posts attachment

Code:

ssh root@my.zimbrabox.com
wget http://www.zimbra.com/forums/attachment.php?attachmentid=187&stc=1
tar -xzvf add_disclaimer_files.tgz
cp /opt/zimbra/postfix/conf/master.cf /opt/zimbra/postfix/conf/master.cf.bak
mv master.cf /opt/zimbra/postfix/conf/master.cf
chown zimbra:zimbra /opt/zimbra/postfix/conf/master.cf
mv putmail.py /usr/local/bin
chmod +x /usr/local/bin/putmail.py
mkdir /opt/zimbra/.putmail
mv putmailrc /opt/zimbra/.putmail
joe /opt/zimbra/.putmail/putmailrc

Change the email address to one of your own email addresses
/opt/zimbra/.putmail/putmailrc

Code:

[config]
server = localhost
email = admin@myzimbradomain.com
port = 10026

save and exit

as root

Code:

cd ..
chown zimbra:zimbra /opt/zimbra/.putmail -R
mkdir /opt/zimbra/filter
mkdir /opt/zimbra/filter/scratch
mv add_disclaimer /opt/zimbra/filter
chmod +x /opt/zimbra/filter/add_disclaimer
joe /opt/zimbra/filter/add_disclaimer

Find and Change copyright URL to one of your own

/opt/zimbra/filter/add_disclaimer

Code:

--xheader="X-Copyrighted-Material: Please visit http://www.yourdomain.com/disclaimer.html" \

Save text and exit

Now create the global footer files
as root

Code:

joe /opt/zimbra/filter/disclaimer.txt

/opt/zimbra/filter/disclaimer.txt

Code:

Whatever text you want to appear at the bottom of each email

Save the text and exit

as root

Code:

joe /opt/zimbra/filter/disclaimer.html

/opt/zimbra/filter/disclaimer.html

Code:

Whatever <b>HTML</b> text you want to appear at the bottom of each email

Save the text and exit

as root

Code:

chown zimbra:zimbra /opt/zimbra/filter -R
mv zmrestart /opt/zimbra/bin
chmod +x /opt/zimbra/bin/zmrestart
chown zimbra:zimbra /opt/zimbra/bin/zmrestart
su - zimbra
zmrestart

If all went well you now have global footers on each email

Do what you can to support this excellent product. ZCS is too cool!!!

**puladesh** · 03-26-2006, 01:16 PM

From my content filter, can I directly inject the message into LMTP, instead of submitting it back to postfix on the 10026 port?

**Dux T** · 03-26-2006, 03:13 PM

Originally Posted by marcmac

here's the problem.

Message path looks like this in zimbra:
source -> postfix:25 -> amavis:10024 -> postfix:10025 -> zcs:7025 (lmtp).

Your script adds this:
source -> postfix:25 -> amavis:10024 -> postfix:10025 -> yourscript

ipe -> postfix:25 -> and back to amavis, etc, etc.

So you'll need to have your script submit back to postfix on another port (10026 is next in the progression) and postfix (in master.cf) will have to have that port set up with no content filter, no alias expansion, etc, etc, to forward on to lmtp.

Basically when I tried to use LMTPInject I ended up in a loop

**achow** · 05-04-2006, 08:50 PM

Sorry ... this is late... but i tried the script and I am getting the disclaimer to appear from all incoming (from external) and from all outgoing messages.

Anyway to prevent the incoming message to append the disclaimer??

adrian
P/s: Otherwise, it is another great solution for disclaimers!

**simonellistonball** · 05-05-2006, 09:34 AM

Originally Posted by achow

Anyway to prevent the incoming message to append the disclaimer??

A quick and dirty way of doings this would be to add a check on the from line, eg...

Code:

#!/bin/sh
# System dependent settings
ALTERMIME=/usr/local/bin/altermime
ALTERMIME_DIR=/opt/zimbra/amavisd-new-2.3.3/tmp/
SENDMAIL=/usr/local/bin/putmail.py
export HOME=/opt/zimbra
# Exit codes of commands invoked by Postfix are expected
# to follow the conventions defined in <sysexits.h>.
TEMPFAIL=75
UNAVAILABLE=69
# Change in to alterMIME's working directory and
# notify Postfix if 'cd' fails.
cd $ALTERMIME_DIR || { echo $ALTERMIME_DIR does not exist; exit $TEMPFAIL; }
# Clean up when done or when aborting.
trap "rm -f in.$$" 0 1 2 3 15
# Write mail to a temporary file
# Notify Postfix if this fails
cat >in.$$ || { echo Cannot write to $ALTERMIME_DIR; exit $TEMPFAIL; }

# test the message for relevant headers
cat in.$$ | grep -qE '^From: .*@example.com>?' || { $SENDMAIL "$@" <in.$$ && exit $?; }

# Call alterMIME, hand over the message and
# tell alterMIME what to do with it
$ALTERMIME --input=in.$$ \
			--disclaimer=/opt/zimbra/filter/disclaimer.txt \
			--disclaimer-html=/opt/zimbra/filter/disclaimer.html \
			--xheader="X-Copyrighted-Material: Please visit http://www.example.com" \
			--htmltoo \
			--force-for-bad-html \
			 || \
			{ echo Message content rejected; exit $UNAVAILABLE; }
# Call sendmail to reinject the message into Postfix
$SENDMAIL "$@" <in.$$
# Use sendmail's EXIT STATUS to tell Postfix
# how things went.
exit $?

This could be adapted to do a lookup with zmprov GetAllDomains, or an LDAP lookup, but then it might fit more into the realms of a perl/php/python script.

**achow** · 05-07-2006, 07:35 PM

Confirmed working with the change in the add_disclaimer file.

Thanks so much.

adrian

Zimbra

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