From 5dd80af687764d70064e403bd5a017626206dc9e Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Thu, 12 Jun 2025 17:26:51 +0100
Subject: [PATCH] Fix exim configuration on Ubuntu 20.04

---
 cookbooks/exim/templates/default/exim4.conf.erb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cookbooks/exim/templates/default/exim4.conf.erb b/cookbooks/exim/templates/default/exim4.conf.erb
index 9e21429fe..71996f148 100644
--- a/cookbooks/exim/templates/default/exim4.conf.erb
+++ b/cookbooks/exim/templates/default/exim4.conf.erb
@@ -737,7 +737,9 @@ begin transports
 remote_smtp:
   driver = smtp
   multi_domain = false
+<% if node.platform?("debian") || (node.platform?("ubuntu") && node[:lsb][:release].to_f >= 22.04) -%>
   message_linelength_limit = 1G
+<% end -%>
   tls_require_ciphers = <%= node[:ssl][:gnutls_ciphers] %>:%LATEST_RECORD_VERSION
 
 
@@ -751,7 +753,9 @@ signed_smtp:
   dkim_private_key = /etc/exim4/dkim-keys/${dkim_domain}
   dkim_identity = ${lc:${address:$h_from:}}
   dkim_timestamps = 1209600
+<% if node.platform?("debian") || (node.platform?("ubuntu") && node[:lsb][:release].to_f >= 22.04) -%>
   message_linelength_limit = 1G
+<% end -%>
   multi_domain = false
   max_rcpt = 20
   hosts_try_dane =
-- 
2.39.5