Send email without authentication, exception for 1 account

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efonseca
Posts: 20
Joined: Wed Apr 27, 2016 8:56 pm

Send email without authentication, exception for 1 account

Postby efonseca » Wed Aug 29, 2018 8:22 pm

Hello dears:
My mail server zimbra was receiving many brute force attacks, I decided to add more security with the following policies.

zmprov mcf zimbraMtaSmtpdSenderLoginMaps proxy:ldap:/opt/zimbra/conf/ldap-slm.cf +zimbraMtaSmtpdSenderRestrictions reject_authenticated_sender_login_mismatch

vi /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf
permit_mynetworks, reject_sender_login_mismatch

zmprov mcf zimbraMtaSmtpdRejectUnlistedRecipient yes
zmprov mcf zimbraMtaSmtpdRejectUnlistedSender yes
zmmtactl restart
zmconfigdctl restart

It turns out that now there are staff who send massive emails and the applications they use are not able to send emails using authentication.

It is possible to make an exception, so 1 account if you can do it.

I would appreciate your cooperation.


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