Hello Sam,
thanks for your introduction! When sqwebmail and maildrop is working
together then it should be possible to write a plugin for roundcube
doing the same job. I hope so. I just need to understand maildrop and
how to get into my system. I thought maildrop is part of courier (there
re two packages on a debian system: courier-maildrop and maildrop).
That's why I was asking my question in this group.
Thomas B
Am 14.02.2016 um 23:58 schrieb Sam Varshavchik:
Thomas Barth writes:
Hello,
I would like to give my mailusers the possibility to define filter rules
on the server, so that they dont need to define the rules on each
mailclient for getting mails into certain maildirectories e.g. by
sender. My system is:
Debian / Postfix / Courier / MySQL / Spamassassin like described in this
tutorial:
https://www.howtoforge.com/virtual-users-and-domains-with-postfix-courier-mysql-and-squirrelmail-debian-wheezy.
It s nearly the same system, but the main difference is, that my
mailserver doesnt make store and forward. It checks incoming mail in
realtime and rejects them directly if it is spam or mail with virus. I
ve replaced Squirrelmail by Roundcube and I thought it would be a good
idea to make a plugin for setting up filter rules on the mailserver if
such a plugin still doesnt exist. I heard of courier maildrop but I ve
absolutely no idea if this tool is practical for this and how to bring
it into the chain of mail delivery.
You might be surprised to learn that an IMAP server has absolutely
nothing to do with delivering mail.
The only thing that an IMAP server does is provide mail clients access
to mail in existing mailboxes. But how that mail gets there is
something that an IMAP server doesn't know, or care anything about.
So, your question does not really have anything to do with an IMAP
server. With one small exception, perhaps, is that whatever is
delivering mail to your mailboxes needs to know how the IMAP server
organizes the individual folders in each mailbox, so that mail can be
delivered to the appropriate folder.
maildrop is a mail delivery agent, an MDA. An MDA delivers mail to a
particular mailbox. Mail servers often can handle that themselves, or
use an external MDA. maildrop, when delivering mail, can read a script
that, based on various things, can be used to specify how a particular
message can be disposed of. Whether by discarding an unwanted message
completely, forwarding it to another email address, or delivering it
as usual, or delivering it to a particular mail folder.
However, again, all that maildrop does is read the mail delivery
script, and execute it. How the script is edited is something else
entirely. You could install maildrop, and thus have the ability for
custom mail filtering and delivery for individual mailboxes, but this
won't solve the question of how the mail delivery script gets edited
and installed.
Now, sqwebmail does have an optional ability to provide a simple
web-based interface for writing maildrop recipes. Sqwebmail is a basic
webmail implementation. It's not as fancy as either squirrelmail, or
roundcube, in terms of the actual interface, but it's functional and
gets the job done. So, in total, installing sqwebmail and maildrop
will probably make it possible to do something along the lines of what
you're thinking.
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