helo

Hello everyone. Since a week ago we got into the XBL and CSS lists of Spamhaus.org, due to a problem with a mysterious e-mail sending whose HELO value is "outlook.com". This is obviously impossible because on this server we have HELO well configured with the server name, more than 400 email...

I am having a problem with smtp on domains in use on a server I do not want to use smpt server as server.hostname.tld, but want to use is for each different domain as differentdomain1.tdl and differentdomain2.tdl etc etc however in plesk 17.5 it means that differentdomain1.tld seeks the...

Hi, I'm operating Plesk Onyx behind a NAT firewall and have assigned a public IP address to the internal IP address as outlined in the documentation. But I do not want to change the hostname of the server to the PTR of the public IP address as the FQDN of the machine should correspond to its...

Hello, I have a plesk (ver12.5, CentOS 7) server and in it, there are multiple domains. These domains have been distributed amongst 2 different IPs. (4 domains on IP1 and 3 domains on IP2). I want to match the SMTP HELO with rDNS because it helps with the email deliverability. I know there is...

Hello, I am currently facing an issue with Qmail. My email server has been listed by CBL due to the fact that sent emails show an invalid HELO greetings. According to the [email protected] rejection the HELO for my IP address has a valid syntax. Nevertheless, when I check the full header of...