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Sieve Filtering: Difference between revisions

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Interaction between Spam checking and Sieve filtering
 
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<indicator name="Faults">[[File:Menu-emailadd.svg|link=:Category:Email Features|30px|Back up to the Email Features Category]]</indicator>
= What is Sieve filtering? =
= What is Sieve filtering? =


At a basic level, Sieve is a system whereby the server is given rules by you to filter your email into folders. It then means that, whatever email program you use, your email is already filed away in to their correct folder according to your needs. Sieve can do more than just move email into folders.
At a basic level, Sieve is a system whereby the server is given rules by you to process incoming email - e.g. forward emails, discard emails, or filter your email into folders. It then means that, whatever email program you use, your email is already filed away in to their correct folder according to your needs.


It is helpful if you:
It is helpful if you:
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*Read email from a number of devices
*Read email from a number of devices


This page explains how to connect to our sieve server using Roundcube or other ManageSieve client software, and gives some examples and also further about Sieve and the features we have enabled
Also see: [[Sieve Examples]]


=Sieve Server Settings=
=Sieve Server Settings=
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|-
|-
!Server
!Server
|your.domain.mail.aa.net.uk
|mail.aa.net.uk
|Enable TLS
|e.g., example.com.mail.aa.net.uk i.e., the same as what you use to collect email by IMAP
|-
|-
!Port
!Port
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!Security
!Security
|TLS
|TLS
|You can use TLS for a secure connection, recommended.
|You should use TLS for a secure connection, required.
|}
|}


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*RoundCube - our webmail has a Filters option in the settings - We'd recommend this even if you don't usually use webmail.
*RoundCube - our webmail has a Filters option in the settings - We'd recommend this even if you don't usually use webmail.
*[https://addons.mozilla.org/en-US/thunderbird/addon/sieve/ Extension for Thunderbird] (fine for manually editing the script file) '''Important note:''' Use the [https://github.com/thsmi/sieve/blob/master/nightly/README.md latest] version (eg sieve-0.2.3h.xpi or newer) if the released version does not work.
*[https://github.com/thsmi/sieve/releases Extension for Thunderbird] (fine for manually editing the script file) '''Important note:''' Use the latest version if the one from the Thunderbird is out of date. [https://github.com/thsmi/sieve/releases latest] version version 0.3 or higher should be ok. '''No longer works with Thunderbird versions dating from 2023'''.
*[https://www.claws-mail.org/plugin.php?plugin=managesieve Extension for claws-mail] (may be packaged as claws-mail-managesieve). Very similar to the Thunderbird extension.
*On Linux, you may find a '''sieve-connect''' package which is a command line tool.
*There are others, take a look at [http://sieve.info/clients sieve.info]. You'd use the same server, username and password that you do to access your email, and use port 4190, and TLS.
*There are others, take a look at [http://sieve.info/clients sieve.info]. You'd use the same server, username and password that you do to access your email, and use port 4190, and TLS.
Also see: [[Sieve Examples]]


Whatever IMAP email program you use the Sieve filtering will still work. It may be easiest to create and edit the filters using Roundcube webmail even if you don't wish to use Roundcube for reading email.
Whatever IMAP email program you use the Sieve filtering will still work. It may be easiest to create and edit the filters using Roundcube webmail even if you don't wish to use Roundcube for reading email.
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== Using Roundcube Filters ==
== Using Roundcube Filters ==
Roundcube will let you create filters using a WYSIWYG style editor - with easy to use drop-down options and so on. You can also edit the sieve code in 'raw' format - select 'Actions', 'Edit filter set' (it's the way to move rules up or down the order).


To create a simple filter to move a few online shop emails in to a folder called shopping:
To create a simple filter to move a few online shop emails in to a folder called shopping:
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This will then move emails from these addresses in to a separate folder.
This will then move emails from these addresses in to a separate folder.


⚫
=Sieve Extensions We Don't Support=
⚫
===Examples===
⚫
We don't support the following extensions:
⚫
*reject
⚫
**This is because we don't want to have to deal with backscatter and emailing non delivery report messages


⚫
* [[Sieve-Example:Notify Notify another mailbox when email arrives]]


⚫
=Other Sieve Notes=
Here is a filter to move email from specific people in to a separate folder:
⚫
*When using fileinto: with :create, a new folder will be created if it does not already exist, this is normal. In this case, the new folder will be subscribed to automatically. -You may need to restart your client, or collapse and reopen the folder list (e.g. Thunderbird), for it to notice that there is a new folder that should be listed.
*spam folder: If you have a folder called 'spam' then email which is marked as spam will end up there bypassing any Sieve filters. If you do not wish to happen then rename or delete the folder called 'spam', and add a filter to move spam marked messages to another folder (e.g. junk, rubbish, etc.) '''Update November 2023''': this appears not to be the case - the 'spam' folder is automatically created, but messages are processed by the spam engines, and then passed through Sieve filtering so you can decide what to do with the spam using your Sieve rules. To recreate the previous behaviour (and perhaps extend it a little) you might need a rule like:
require ["fileinto","mailbox"];
if exists "X-Spam-Flag" {
if header :is "X-Spam-Flag" "YES" {
if exists "X-Spam-Bar" {
# 20 OR MORE +
if header :contains "X-Spam-Bar" "++++++++++++++++++++" {
# Can't reject, not supported
fileinto :create "bad-spam";
stop;
}
}
fileinto :create "spam";
stop;
}
}

⚫
=Some Examples=


⚫
* [[Sieve-Example:Notify|Notify another mailbox when email arrives]]
[[File:Sieve-family-example.png|none|frame|Filtering family email in to a separate folder]]
* [[Sieve-Example:Move email to a folder|Move email to a folder]]
* [[Sieve-Example:Move email to a suffix folder|Move email to a folder based on a localpart suffix]]
* [[Sieve-Example:HTML Autoresponder|HTML Autoresponder]] Automatically reply to incoming email with a HTML formatted email


== Converting From Mozilla Thunderbird to Sieve ==
== Converting From Mozilla Thunderbird to Sieve ==


If you use Mozilla (e.g. Thunderbird) and have existing rules created, then they can be converted in to Sieve format on this page: [http://wiki.aa.org.uk/aacustom/mozilla2sieve.html mozilla2sieve.html]. Here are some step by step instruction on moving the filters over:
If you use Mozilla (e.g. Thunderbird) and have existing rules created, then they can be converted in to Sieve format on this 3rd party page: [http://mozfilter2sieve.sourceforge.net/mailfilters.html http://mozfilter2sieve.sourceforge.net/mailfilters.html]. Here are some step by step instruction on moving the filters over:


#Open your msgFilterRules.dat file in a text editor (notepad, gedit etc.)
#Open your msgFilterRules.dat file in a text editor (notepad, gedit etc.)
#*This file will be found in your 'Local directory', which can be found in Account Settings - Server Setting - look for the 'Local directory' box at the bottom.
#*This file will be found in your 'Local directory', which can be found in Account Settings - Server Setting - look for the 'Local directory' box at the bottom.
#Copy and paste the text in to the [http://wiki.aa.org.uk/aacustom/mozilla2sieve.html converter]
#Copy and paste the text in to the [http://mozfilter2sieve.sourceforge.net/mailfilters.html converter]
#Install the ThunderBird ManageSieve Addon:
#Install the ThunderBird ManageSieve Addon:
#*Tools - Addons - Search for Sieve, and Install 'Sieve 0.22'
#*Tools - Addons - Search for Sieve, and Install 'Sieve'
#Go to Tools - Sieve Message Filters
#Go to Tools - Sieve Message Filters
##Click 'New...'
##Click 'New...'
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#You can then view the filters via Roundcube webmail, which is easier to edit as it's more of a GUI editor rather than than a straight script editor like the Thuinderbird addon is.
#You can then view the filters via Roundcube webmail, which is easier to edit as it's more of a GUI editor rather than than a straight script editor like the Thuinderbird addon is.


⚫
=Sieve Extensions We Don't Support=
⚫
We don't support the following extensions:
⚫
*reject
⚫
**This is because we don't want to have to deal with backscatter and emailing non delivery report messages


==Help with Other Email Features==
<ncl style=bullet maxdepth=5 headings=bullet headstart=2 showcats=1 showarts=1>Category:Email Features</ncl>





⚫
=Other Sieve Notes=
⚫
*When using fileinto: with :create, a new folder will be created if it does not already exist, this is normal. In this case, the new folder will be subscribed to automatically. -You may need to restart your client (e.g. Thunderbird) for it to notice that there is a new folder that should be listed.


[[Category:Email Features]]
[[Category:Email Features]]
[[Category:Sieve]]
[[Category:Email How to]]
Retrieved from "http://support.aa.net.uk/Sieve_Filtering"