Postfix email backup?

glyn3332 · 10-09-2008, 09:16 AM

Hi all,

I was wondering if anyone knows how to implement an email backup system with a Postfix system on CentOS 5 using courier?

I have Googled it but I only find how to use Postfix as a backup MX server.

Any help appreciated

Mr. C. · 10-10-2008, 01:51 AM

Sender and recipient bcc maps should do:

http://www.postfix.org/ADDRESS_REWRI....html#auto_bcc

billymayday · 10-10-2008, 02:54 AM

Or do you want to backup the emails on your server?

Mr. C. · 10-10-2008, 03:13 AM

Backups of a courier system is nothing more than one or more tar archives of the mail stores. I do this incremental archives of mail stores nightly.

glyn3332 · 10-10-2008, 04:28 AM

Thanks for the response guys. I don't think I gave you enough information to work from as usual!

What I want to do is catch incoming mail to say me@my-domain.com and store a copy in a folder such as /backups/mail/my-domain.com/users/me/dd-mm-yyyy/ so at the end of the day i can run a cron job to turn it into a tar.gz and delete the other files so if a client asks for their mail due to loss I can place it back in their mail box for them.

Thanks for the replies I will follow the current leads now

Mr. C. · 10-10-2008, 02:49 PM

You want recipient_bcc_maps in use with a virtual mailbox, which specifies the location of the archive. The archive cannot be date-based (it is just a Maildir style mailbox), but you can write your archive script to pick up mail from only given dates.

The idea is this:

Code:

main.cf:

   recipient_bcc_maps = pcre:/etc/postfix/recipient_bcc


/etc/postfix/recipient_bcc recipient_bcc 

   # pick one of the methods below that work best for you:

   # Method 1: for specific users only, such as you
   me@my-domain.com       me@copy.example.org

   # Method 2: more complete forms, capturing original recipient and domains
   /^\"(.*)\"@(.*)/     "$1=$2"@copy.example.org
   /(.*)@([^@]+)$/        $1=$2@copy.example.com

This makes a copy of all mail addressed to the specified recipients.

See these threads:
http://groups.google.com/group/list....29cd94db8f19dd
http://groups.google.com/group/list....450e999e07066f
http://www.arschkrebs.de/postfix/postfix_archive.shtml

Ask more specifics if necessary for more help.

trickykid · 10-10-2008, 04:42 PM

I would actually take the approach of doing snapshots periodically and then back those up from there. That's if you have the hardware and or capability to do so. You can take snapshots with LVM.

glyn3332 · 10-11-2008, 12:27 PM

Quote:

Originally Posted by Mr. C.

You want recipient_bcc_maps in use with a virtual mailbox, which specifies the location of the archive. The archive cannot be date-based (it is just a Maildir style mailbox), but you can write your archive script to pick up mail from only given dates.

The idea is this:

Code:

main.cf:

   recipient_bcc_maps = pcre:/etc/postfix/recipient_bcc


/etc/postfix/recipient_bcc recipient_bcc 

   # pick one of the methods below that work best for you:

   # Method 1: for specific users only, such as you
   me@my-domain.com       me@copy.example.org

   # Method 2: more complete forms, capturing original recipient and domains
   /^\"(.*)\"@(.*)/     "$1=$2"@copy.example.org
   /(.*)@([^@]+)$/        $1=$2@copy.example.com

This makes a copy of all mail addressed to the specified recipients.

See these threads:
http://groups.google.com/group/list....29cd94db8f19dd
http://groups.google.com/group/list....450e999e07066f
http://www.arschkrebs.de/postfix/postfix_archive.shtml

Ask more specifics if necessary for more help.

That's perfect thanks