Postfix configuration issue


In short: sending email to with postfix attempts a connection to and fails. I’ve tried to RTFM but failed to find why it redirects.

Details: I’m trying to get my Mac to send my dreamhost email.
I’ve got postfix configured as on
relayhost =
but upon sending email I get:
postfix/smtp[50672]: connect to[]: Operation timed out (port 587)
and indeed telnetting to fltr-in2 doesn’t connect, while telnet 587 works.