From 178e018032e0c171d043017265f8e44715781a2c Mon Sep 17 00:00:00 2001
From: ale <ale@incal.net>
Date: Wed, 19 Mar 2025 11:15:48 +0000
Subject: [PATCH] Mailman: make a new SMTP connection for every session
Should allow us to load-balance outbound email better among the
available mail-frontend servers, in combination with the mailman
RR patch.
---
roles/mailman/templates/mm_cfg.py.j2 | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/roles/mailman/templates/mm_cfg.py.j2 b/roles/mailman/templates/mm_cfg.py.j2
index b0cd8f89..48b48fb8 100644
--- a/roles/mailman/templates/mm_cfg.py.j2
+++ b/roles/mailman/templates/mm_cfg.py.j2
@@ -127,6 +127,10 @@ SMTPHOST = 'mail-frontend.{{ domain }}'
SMTPPORT = 10025
SMTP_HELO_HOST = '{{ shard_id }}.mailman.{{ domain }}'
+# Establish a new SMTP connection for every session, to effectively
+# load-balance outbound email among available mail-frontend servers.
+SMTP_MAX_SESSIONS_PER_CONNECTION = 1
+
DEFAULT_ARCHIVE = Off
DEFAULT_ARCHIVE_PRIVATE = 1
ARCHIVE_TO_MBOX = 2
--
GitLab