Hello, I've disabled the reject_unknown_helo_hostname on the smtpd_helo_restrictions parameter due to an user complaining from not receiving an email from specific sender, (error 450. 4.7.1 Helo command rejected: Host not found). After the update the smtpd_helo_restrictions parameter re-enable the reject_unknown_helo_hostname. Is there any way I can use to avoid these parameters reset to default after an update?
copy the corresponding config master file from install/tpl/ of the ispconfig tar.gz file to /usr/local/ispconfig/server/conf-custom/install/ and modify it there.