[ale] Strange sendmail (and postfix) spam issue: accepting fail "from" myself?
Phil Turmel
philip at turmel.org
Wed Mar 30 09:23:40 EDT 2016
On 03/29/2016 04:58 PM, Alex Carver wrote:
> As for the rule, no clue how to write it in sendmail's m4 macros, I use
> exim for the MTA.
I too use exim. I have a rule that requires senders in the hosted
domain to authenticate:
Sample excerpt from exim.conf:
# In the Main config section
domainlist must_auth_senders = example.com
# In the ACL section under acl_check_rcpt after basic checks but
# before SPF and blacklist checks.
accept authenticated = *
deny message = Local originators must authenticate
sender_domains = +must_auth_senders
HTH,
Phil
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