From e9b0dc298740c07aff9b54bb93d40c453a9c23b7 Mon Sep 17 00:00:00 2001 From: "Adam D. Barratt" Date: Mon, 14 Oct 2019 22:19:42 +0100 Subject: [PATCH] eximconf: reject bounces to "neversender" addresses If an address never originates mail then there is no reason for it to be receiving NDRs Signed-off-by: Adam D. Barratt --- modules/exim/templates/eximconf.erb | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/modules/exim/templates/eximconf.erb b/modules/exim/templates/eximconf.erb index 0cd231b82..6b055f9f1 100644 --- a/modules/exim/templates/eximconf.erb +++ b/modules/exim/templates/eximconf.erb @@ -700,6 +700,12 @@ check_recipient: condition = ${lookup{$sender_address_local_part}lsearch{${extract{directory}{VSENDERDOMAINDATA}{${value}/neversenders}}}{true}} message = no mail should ever come from <$sender_address> + deny domains = +virtual_domains + senders = : + condition = ${if exists {${extract{directory}{VDOMAINDATA}{${value}/neversenders}}}} + condition = ${lookup{$local_part}lsearch{${extract{directory}{VDOMAINDATA}{${value}/neversenders}}}{true}} + message = <$local_part@$domain> does not send mail; rejecting bogus NDR + warn condition = ${if eq{$acl_m_prf}{localonly}} set acl_m_lrc = ${if eq{$acl_m_lrc}{}{$local_part@$domain}{$acl_m_lrc, $local_part@$domain}} -- 2.20.1