Hi All, I just figured out that qmail actually allows any connection IP to send email to a domain that is there in its /var/qmail/control/rcpthosts
Which seems to be partly open-relay !! Ideally it should allow only those IPs to relay a message that is either authenticated or allowed by relay-client (/etc/tcp.smtp) in case of qmail. The problem I am facing is that my qmail server is a relay server and it doesnt store emails. It should allow smtp relay for those IPs specified in /etc/tcp.smtp I have the domain in rcpthosts but this is letting any IP connecting to the server to send an email to that domain from the server. at the moment i am in a confused state. I dont know what more to write here. I have worked with postfix (a little bit) and sendmail. Both denied relay if the connecting IP did not match allowed clients. I am surely missing something about qmail configuration... I am most likely confusing role of rcpthost file. Is it needed if we have to just relay? qmail master please help !!!
