From 4979456d0e4d5ae2e77bce91ec67b543cf2daba2 Mon Sep 17 00:00:00 2001 From: "Adam D. Barratt" Date: Sat, 2 Nov 2019 18:13:09 +0000 Subject: [PATCH 1/1] exim helo check: reject claims to be *.mail.protection.outlook.com The *.mail.protection names are used for inbound mail, outbound traffic should come from *.outbound.protection.outlook.com Signed-off-by: Adam D. Barratt --- modules/exim/files/common/helo-check | 1 + 1 file changed, 1 insertion(+) diff --git a/modules/exim/files/common/helo-check b/modules/exim/files/common/helo-check index 458204cc0..76c3ae97a 100644 --- a/modules/exim/files/common/helo-check +++ b/modules/exim/files/common/helo-check @@ -36,3 +36,4 @@ earthlink.net tom.com *.example.com smtp.outlook.com +*.mail.protection.outlook.com -- 2.20.1