Re: [Dovecot] What exactly do you mean by archiving?
I mean every single email sent and recieved is kept for a period of
time (3 -5 years) separate from users mail, and emails cant be
deleted. Ideally emails would have compression, mailboxes need to be
searchable easily, and some mechanism whereby attachments sent to
multiple people only get saved once, and emails sent to multiple
people only get saved once. I could do something with procmail that
copies every email coming in to another directory easily, but that
doesnt solve the sent email. Ive looked at several commercial
products, but none seem to work nicely with sendmail. Thanks for the
information, I'll look and see if sieve will work better for me than
procmail. Im not sure thought that your method will pass the test
come litigation time (if that every happens).
thanks,
ddh
-- Dwayne Hottinger Network Administrator Harrisonburg City Public Schools
"Everything should be made as simple as possible, but not simpler." -- Albert Einstein
"The hottest places in Hell are reserved for those who, in times of moral crisis, preserved their neutrality." -- Dante
On Saturday 10 October 2009 13:34:39 dhottinger@harrisonburg.k12.va.us wrote:
I mean every single email sent and recieved is kept for a period of time (3 -5 years) separate from users mail, and emails cant be deleted. Ideally emails would have compression, mailboxes need to be searchable easily, and some mechanism whereby attachments sent to multiple people only get saved once, and emails sent to multiple people only get saved once.
Well my solution certainly will not fulfil all your requirements as it doesn't do compression and saves all mail and all attachments, regardless of number of recipients. Obviously you need some disk space, but that's really cheap these days. And since ACLs (as mentioned) don't work just right yet the archived messages would be deletable if the Backup namespace wasn't hidden from the users.
My setup just does what it promises: saving all sent and received mail for every user on the system. This could actually be considered a feature, as it were, since it is a true, private, per-user backup where restoring messages wouldn't require any action from the administrator. However, I'm sure it can be refined (e.g. using ACLs) and I am open for suggestions.
I could do something with procmail that copies every email coming in to another directory easily, but that doesnt solve the sent email.
Well, sending mail is handled by the MTA (Sendmail in your case, Postfix in ours) so that is where you need to hook into to archive sent mail. The sender_bcc_maps parameter in Postfix is such a hook. You might want to have a look at [1] for that.
I haven't found any way for this other than BCC'ing the message back to the sender and I don't think there is any. The beauty of it is its transparency and simplicity at the (minor) cost of an additional, local SMTP connection.
Ive looked at several commercial products, but none seem to work nicely with sendmail. Thanks for the information, I'll look and see if sieve will work better for me than procmail. Im not sure thought that your method will pass the test come litigation time (if that every happens).
If it is an option I strongly suggest getting rid of Sendmail and using a secure, well-documented, feature-rich and easy to administer MTA like Postfix. Your life as administrator will be easier.
Andreas
[1] http://www.postfix.org/ADDRESS_REWRITING_README.html#auto_bcc
Andreas Ntaflos
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Andreas Ntaflos
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dhottinger＠harrisonburg.k12.va.us