I just swtich from Postfix + Dovecot to OpenSMTPd + Dovecot
And here is my conf:
table domain file:/etc/mail/domain
table aliases db:/etc/mail/aliases.db
expire 4h
pki foobar.com certificate "/etc/ssl/foobar.com/foobar.crt"
pki foobar.com key "/etc/ssl/foobar.com/foobar.key"
pki foobar.com dhparams "/etc/ssl/foobar.com/dhparam.pem"
listen on lo0 port 25
listen on egress port 25 tls pki foobar.com auth-optional
listen on egress port 2525 tls-require pki foobar.com auth
listen on lo0 port 10027 tag Signed
accept for local alias <aliases> deliver to mda
"/usr/local/libexec/dovecot/dovecot-lda -f %{sender} "
accept from any for domain <domain> alias <aliases> deliver to mda
"/usr/local/libexec/dovecot/dovecot-lda -f %{sender} "
accept from any for domain <domain> deliver to mda
"/usr/local/libexec/dovecot/dovecot-lda -f %{sender} "
accept from local for any relay
accept for any relay
I also have spamd, this is under OpenBSD 5.6 -release.
Any hint to make it better or secure?
Thanks.