diff options
Diffstat (limited to 'roles/mail/files/postfix/helo-access.pcre')
| -rw-r--r-- | roles/mail/files/postfix/helo-access.pcre | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/roles/mail/files/postfix/helo-access.pcre b/roles/mail/files/postfix/helo-access.pcre new file mode 100644 index 0000000..f678385 --- /dev/null +++ b/roles/mail/files/postfix/helo-access.pcre @@ -0,0 +1,26 @@ +# +# Postfix access control on HELO/EHLO context. +# +# References: +# * Postfix SMTP relay and access control +# http://www.postfix.org/SMTPD_ACCESS_README.html +# +# NOTE: by default, patterns are case insensitive. +# +# Aaron LI +# 2017-08-05 +# + +# +# smtpd_helo_restrictions = +# permit_mynetworks, +# check_helo_access pcre:/usr/local/etc/postfix/helo-access.pcre, +# reject_non_fqdn_helo_hostname, +# reject_invalid_helo_hostname, +# reject_unknown_helo_hostname, +# permit +# + +# Whitelist M$ Exchange Online Protection +# See also: https://technet.microsoft.com/en-us/library/dn163583 +/^.*\.outbound.protection.outlook.com$/ OK |