deleting attachments
in [Postfix]
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From: "Lucian on 14 Dec 2009 02:16 Hello, I need to delete all attachments from emails at server level. I'm using stock postfix in Centos 5 (v 2.3.3). I found renattach (http://www.pc-tools.net/unix/renattach/), but this software seems to have been discontinued and the author does not recommend it anymore. Can you recommend another method of deleting attachments? Thank you, Lucian
From: Michal Kurka on 14 Dec 2009 02:28 Dne 14.12.2009 v 09:16 Lucian @ lastdot.org napsal(a): > I need to delete all attachments from emails at server level. I'm > using stock postfix in Centos 5 (v 2.3.3). > I found renattach (http://www.pc-tools.net/unix/renattach/), but this > software seems to have been discontinued and the author does not > recommend it anymore. > Can you recommend another method of deleting attachments? I use: postfix content_filter -> my shell-script -> ripmime -> postfix-sendmail Programm 'ripmime' split mail into files - one file is one MIME-part (plain text body, attachments files,...). But for only delete attachments maybe there is exists more elegant and simpler method (programm) than with 'ripmime'. -- Michal Kurka - Mysak sluzby spojene s operacnim systemem Linux
From: "Aaron C. de Bruyn" on 14 Dec 2009 02:48 On 2009-12-14 at 09:16:29 +0200, Lucian @ lastdot.org wrote: > I need to delete all attachments from emails at server level. I'm > using stock postfix in Centos 5 (v 2.3.3). > I found renattach (http://www.pc-tools.net/unix/renattach/), but this > software seems to have been discontinued and the author does not > recommend it anymore. > Can you recommend another method of deleting attachments? I tweaked detach (found here: http://detach.optimism.cc/). Instead of saving attachments to a directory and putting URLs in the message, it saves the attachments to /dev/null and I diked out the code that puts the URLs in the e-mail. In master.cf, I add '-o content_filter=detach' to the SMTP service, and add the detach service further down in master.cf. detach unix - n n - - pipe flags=Rq user=list argv=/usr/local/bin/detachit $(sender) $(recipient) The detachit script file is pretty simple. It handles piping the message to the detach script, and then taking the result and pushing it back to the sendmail command for final delivery. #!/bin/sh # # detachit: Pipe postfix messages through detach # sender=$1 shift recip="$@" if [ "$#" -eq 1 ]; then /usr/local/bin/detach -d /var/www/webmail/detach --aggressive -w https://enamel.welovesmiles.com/detach else /usr/local/bin/detach -d /var/www/webmail/detach --aggressive -w https://enamel.welovesmiles.com/detach fi | /usr/sbin/sendmail -i -f $sender -- $recip exit $? Hope that helps. -A
From: "Lucian on 14 Dec 2009 03:16 On Mon, Dec 14, 2009 at 9:48 AM, Aaron C. de Bruyn <postfix-users(a)darkpixel.com> wrote: > On 2009-12-14 at 09:16:29 +0200, Lucian @ lastdot.org wrote: >> I need to delete all attachments from emails at server level. I'm >> using stock postfix in Centos 5 (v 2.3.3). >> I found renattach (http://www.pc-tools.net/unix/renattach/), but this >> software seems to have been discontinued and the author does not >> recommend it anymore. >> Can you recommend another method of deleting attachments? > > I tweaked detach (found here: http://detach.optimism.cc/). > Instead of saving attachments to a directory and putting URLs > in the message, it saves the attachments to /dev/null and I > diked out the code that puts the URLs in the e-mail. > > In master.cf, I add '-o content_filter=detach' to the SMTP > service, and add the detach service further down in master.cf. > > detach unix - n n - - pipe > flags=Rq user=list argv=/usr/local/bin/detachit > $(sender) $(recipient) > > The detachit script file is pretty simple. It handles piping > the message to the detach script, and then taking the result > and pushing it back to the sendmail command for final delivery. > > #!/bin/sh > # > # detachit: Pipe postfix messages through detach > # > sender=$1 > shift > recip="$@" > if [ "$#" -eq 1 ]; then > /usr/local/bin/detach -d /var/www/webmail/detach --aggressive -w https://enamel.welovesmiles.com/detach > else > /usr/local/bin/detach -d /var/www/webmail/detach --aggressive -w https://enamel.welovesmiles.com/detach > fi | /usr/sbin/sendmail -i -f $sender -- $recip > exit $? > > Hope that helps. > > -A > Thanks for your replies, detach seems to be close to what I want. Aaron, any chance you can release your customizations to detach? Regards, Lucian
From: Stan Hoeppner on 14 Dec 2009 03:18
Lucian @ lastdot.org put forth on 12/14/2009 1:16 AM: > Hello, > > I need to delete all attachments from emails at server level. I'm > using stock postfix in Centos 5 (v 2.3.3). > I found renattach (http://www.pc-tools.net/unix/renattach/), but this > software seems to have been discontinued and the author does not > recommend it anymore. > Can you recommend another method of deleting attachments? Does this server receive email from the internet? Do you want to strip attachments from both inbound and outbound email or just inbound email? The solution may vary, or require two separate solutions, depending on the answers to these questions. The solution may also vary depending on whether this is a relay/gateway server or one that delivers mail to local maildirs or to a local IMAP server such as dovecoat. We need more details before we can steer you in the correct direction. For instance, if you deliver mail locally to dovecoat, and you only want to strip attachments from inbound mail, you can do this within dovecoat. If this is a gateway/relay only Postfix server, you will likely have to implement inbound and outbound policy filters for stripping the attachments. -- Stan |