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feat: [CO-513] Set sane defaults for postfix smtp server #151

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merged 4 commits into from
Feb 8, 2023

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keshavbhatt
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@keshavbhatt keshavbhatt commented Feb 6, 2023

Goal:
To increase the security and reject false mail from addresses

What has changed:

  • set default value to yes for zimbraMtaSmtpdRejectUnlistedRecipient
    • postfix SMTP server will reject emails sent to unlisted/unknown addresses(smtpd_reject_unlisted_recipient: yes)
  • set default value to yes for zimbraMtaSmtpdRejectUnlistedSender
    • postfix SMTP server will reject emails sent by unlisted/unknown addresses (smtpd_reject_unlisted_sender: yes)
  • set default value for zimbraMtaSmtpdSenderRestrictions
    • set reject_sender_login_mismatch as default value (smtpd_sender_restrictions: +reject_sender_login_mismatch)
  • set default value for zimbraMtaSmtpdSenderLoginMaps
    • set default to ldap sender_login_mismatch lookup table (smtpd_sender_login_maps: + proxy:ldap:/opt/zextras/conf/ldap-slm.cf )

for detailed information see CO-513 on Jira.

Other PRs:

…ient

- postfix SMTP server will reject emails sent to unlisted/unknown addresses
- postfix SMTP server will reject emails sent by unlisted/unknown addresses
set reject_sender_login_mismatch as default value
set proxy:ldap:/opt/zextras/conf/ldap-slm.cf as default value
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3 participants