Today the postmaster "account" recevied about 20 messages stating unable
to deliver mail, unable to return to sender. Neither address was a local
address in any of these cases.
Our rcpthosts file only lists our domains.
When I telneted into port 25 however and tried to mail from: a remote
address and rcpt to: a remote address I recevied a 250 ok.
I am new to qmail but I have read the "Qmail newbie's guide to relaying"
and I thought when I sent from a remote email address to a remote email
address I should have received a 553 domain not in allowed rcpthosts
message. None of the mail i was trying to deliver has appeared in the
remote accounts I was using.
I am concerned that we may be acting as an open relay. How can I check/fix
this?
Jjen
Jennifer Franklin
Assistant Application Designer
Labour Operations Applications Development
Human Resources Development Canada
