Hello,
I noticed something interesting in my logs today. I am running Postfix 3.3.1:
Aug 24 21:09:25 server postfix/submission/smtpd[10256]: connect from
unknown[unknown]:unknown
Aug 24 21:09:25 server postfix/submission/smtpd[10256]: lost connection
after CONNECT from unknown[unknown]:unknown
Aug 24 21:09:25 server postfix/submission/smtpd[10256]: disconnect from
unknown[unknown]:unknown commands=0/0
It is clear that this was a bad connection, but under what circumstances does
Postfix consider a remote connection’s address as “unknown” ? Wouldn’t Postfix
always know the remote IPv4/IPv6 address because when a client connects to the
server the address is passed from the OS to Postfix ?
Thanks,
- J
