Hello,
i try to set up safe etrn.
i use in main.cf
smtpd_etrn_restrictions = check_etrn_access hash:/etc/postfix/etrn-domains
reject
if etrn-domain is found /etc/postfix/etrn-domains returns name of 2nd
restriction which checks by check_client_access other file for clientip and
returns ok if found.
setup works but there is still security-problem that a client ip which is
allowed for etrn is requesting mails for other domain.
is there a combination of restrictions to make it safe or is an own
policy-service better solution?
2nd question:
atrn/odmr
In contrast to expactation atrn/odmr works pretty different. Is there a
official Readme how to deal with this the best way?
All i found are really old discussions with no clear answers.
Thanks,
Andre
