| 114,49 → 114,46 |
|---|
| can just use the Greylisting module shipped with sa-exim. |
| The only thing you need to do to enable it, is to copy the 4 lines below |
| loadplugin in the greylisting README, and adjust the score if you wish (see |
| README.Greylisting for details). |
| README.Greylisting for details) |
| |
| *********************************** |
| * PROBLEMS WITH BAYES AUTO-EXPIRY * |
| *********************************** |
| |
| When scanning mail during the SMTP dialogue there is somewhat limited |
| time before the remote host gives up, even if they should wait for at |
| least ten minutes. To avoid Exim returning a temporary error status, |
| or the remote host giving up prematurely and in some cases for good, |
| SA-Exim overrides Exim's timeout handler and accepts the message if |
| SpamAssassin takes too long, by default 240 seconds. |
| If you use a version of SA older than 3.0 (if you are, you really, |
| really should upgrade!), you will need to patch spamassassin's sources |
| to support greylisting. |
| |
| Using SpamAssassin's Bayesian learning module means that it will |
| automatically expire old tokens when its database has grown too large. |
| That can take several minutes. If it takes too long, SA-Exim will |
| abort it, meaning that SpamAssassin will run auto-expiry again next |
| time, and be aborted, and so on... |
| There are two versions of the patches: |
| - /usr/share/doc/sa-exim/patches/SA-greylisting-2.4x.diff |
| This patch can be applied to versions 2.4x of SpamAssassin. Note |
| that this patch is not fully functional anymore, it is just left as |
| a template should you want to backport the current 2.6x patch. |
| That said, you really ought to upgrade SA to 2.6x or 3.x |
| |
| If this happens, you have a few remedies: |
| - /usr/share/doc/sa-exim/patches/SA-greylisting-2.6.diff |
| This patch can be applied to versions 2.6x of SpamAssassin. |
| |
| 1) Set SAtimeout to a higher value in /etc/exim4/sa-exim.conf. |
| Please read README.Greylisting for more information on how to enable |
| this feature, and what further changes are needed. |
| Note that this configuration won't be supported in the future, and you |
| are encouraged to upgrade to SA 3.0 or better. |
| |
| 2) Run sa-learn --force-expire periodically. How you run it depends on |
| how you've configured SpamAssassin. Running it as Debian-exim may |
| be sufficient. |
| ************* |
| * BE WARNED * |
| ************* |
| |
| 2 a) In addition, you can add |
| By applying these patches, you change the sourcecode of SpamAssassin |
| (again, this is if you use a version of SpamAssassin earlier than 3.0) |
| This also means that when the SpamAssassin package gets upgraded, the |
| changes made by the patch are LOST. |
| This *MIGHT* cause your mail setup to break. It might be best to put |
| SpamAssassin on hold: |
| |
| bayes_auto_expire 0 |
| $ echo "spamassassin hold" | dpkg --set-selections |
| |
| to /etc/spamassassin/local.cf. This may not be a good idea if |
| SpamAssassin, for whatever reason, is also used as a more |
| traditional filter from e.g. .procmailrc, as all users will need to |
| run sa-learn --force-expire then. |
| You can later set it to install again with: |
| |
| 2 b) If you get a lot of mail, consider adding |
| $ echo "spamassassin install" | dpkg --set-selections |
| |
| bayes_learn_to_journal 1 |
| |
| to local.cf. See the Mail::SpamAssassin::Conf(3) manual page for |
| more information. |
| |
| ********************************** |
| * NOTICE ABOUT SPAMC CONFIG FILE * |
| ********************************** |
| 165,5 → 162,3 |
|---|
| from a configuration file called /etc/spamassassin/spamc.conf. If that |
| file specifies conflicting options, it will prevent SA-Exim from |
| working. For now, you'll have to make sure that it doesn't. |
| |
| -- Magnus Holmgren <holmgren@debian.org>, Tue, 24 Jun 2008 14:27:59 +0200 |