It seems that all implementations of Qmail on Plesk servers are allowing email to APPARENTLY be relayed if the email address in the RCPT TO: contains an address like spamtest%abuse.net
It correctly rejects relaying (we have SMTP AUTH) if the address is of a standard [email protected], but seems to indicate via a 250 response that it has successfully relayed when the address is someone%somewhere.com
Because of thsi our servers are getting blacklisted as open relays on ordb.org and several other sites.
Does anyone know how to fix this?
It correctly rejects relaying (we have SMTP AUTH) if the address is of a standard [email protected], but seems to indicate via a 250 response that it has successfully relayed when the address is someone%somewhere.com
Because of thsi our servers are getting blacklisted as open relays on ordb.org and several other sites.
Does anyone know how to fix this?