Gitweb:
http://git.exim.org/exim.git/commitdiff/b10e4ec2bc7b74e062939d573cf9e93a9a939890
Commit: b10e4ec2bc7b74e062939d573cf9e93a9a939890
Parent: 599dcb77fa12926903b90dde1f4aa396b4545ddf
Author: Todd Lyons <tlyons@???>
AuthorDate: Wed Oct 9 08:48:39 2013 -0700
Committer: Todd Lyons <tlyons@???>
CommitDate: Wed Oct 9 08:48:39 2013 -0700
Documentation for multiple TCP clamd servers
---
doc/doc-docbook/spec.xfpt | 16 ++++++++++++++++
doc/doc-txt/ChangeLog | 2 ++
src/ACKNOWLEDGMENTS | 1 +
src/README.UPDATING | 3 +++
4 files changed, 22 insertions(+)
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 0d539b0..2598bc8 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -29637,6 +29637,7 @@ number, and a port, separated by space, as in the second of these examples:
av_scanner = clamd:/opt/clamd/socket
av_scanner = clamd:192.0.2.3 1234
av_scanner = clamd:192.0.2.3 1234:local
+av_scanner = clamd:192.0.2.3 1234 : 192.0.2.4 1234
.endd
If the value of av_scanner points to a UNIX socket file or contains the local
keyword, then the ClamAV interface will pass a filename containing the data
@@ -29645,6 +29646,21 @@ more efficient. Normally in the TCP case, the data is streamed to ClamAV as
Exim does not assume that there is a common filesystem with the remote host.
There is an option WITH_OLD_CLAMAV_STREAM in &_src/EDITME_& available, should
you be running a version of ClamAV prior to 0.95.
+
+The final example shows that multiple TCP targets can be specified. Exim will
+randomly use one for each incoming email (i.e. it load balances them). Note
+that only TCP targets may be used if specifying a list of scanners; a UNIX
+socket cannot be mixed in with TCP targets. If one of the servers becomes
+unavailable, Exim will try the remaining one(s) until it finds one that works.
+When a clamd server becomes unreachable, Exim will log a message. Exim does
+not keep track of scanner state between multiple messages, and the scanner
+selection is random, so the message will get logged in the mainlog for each
+email that the down scanner gets chosen first:
+.code
+2013-10-09 14:30:39 1VTumd-0000Y8-BQ malware acl condition: clamd:\
+ connection to localhost, port 3310 failed (Connection refused)
+.endd
+
If the option is unset, the default is &_/tmp/clamd_&. Thanks to David Saez for
contributing the code for this scanner.
diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index eb7b755..384cf97 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -250,6 +250,8 @@ TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
hostname or reverse DNS when processing a host list. Used suggestions
from multiple comments on this bug.
+TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
+
Exim version 4.80.1
-------------------
diff --git a/src/ACKNOWLEDGMENTS b/src/ACKNOWLEDGMENTS
index 4bcf455..1c4a934 100644
--- a/src/ACKNOWLEDGMENTS
+++ b/src/ACKNOWLEDGMENTS
@@ -455,6 +455,7 @@ Moritz Wilhelmy Pointed out PCRE_PRERELEASE glitch
Alain Williams Patch supporting MySQL stored procedures
Mark Zealey Patch updating $message_linecount for maildir_tag
Patch improving spamd server selection
+ Patch to allow multiple TCP clamd servers
Packagers
diff --git a/src/README.UPDATING b/src/README.UPDATING
index 0a78112..8b39848 100644
--- a/src/README.UPDATING
+++ b/src/README.UPDATING
@@ -37,6 +37,9 @@ Exim version 4.82
unnecessary serialisation and load. External tools tracking the state of
Exim by the hints databases may need modification to take this into account.
+ * The av_scanner option can now accept multiple clamd TCP targets, all other
+ setting limitations remain.
+
Exim version 4.80
-----------------
