Hi all,
on CentOS 7.3, Plesk 17.5 #19
after the latest Plesk update, postfix stopped working properly. Clients coming from certain specific ISPs and wanting to log in to send their mail would be greeted with either an error message
"None of the authentication methods supported by this client are supported by your server" or
"too many connections from [public ip address of ISP]".
Clients have to use submission port 587 with authentication enabled.
The maillog has lots...
plesk update broke postfix; created broken/improper postfix master.cf
on CentOS 7.3, Plesk 17.5 #19
after the latest Plesk update, postfix stopped working properly. Clients coming from certain specific ISPs and wanting to log in to send their mail would be greeted with either an error message
"None of the authentication methods supported by this client are supported by your server" or
"too many connections from [public ip address of ISP]".
Clients have to use submission port 587 with authentication enabled.
The maillog has lots...
plesk update broke postfix; created broken/improper postfix master.cf