Postfix Acceptance Testing

assuming you got postfix up and running already

draft

WARNING

make sure you connect from a host that is NOT in mynetworks

SPF ACCEPTANCE

connect from a host that is not part of authorized SPF outbound

openssl s_client -starttls smtp -connect slackmx.nethence.com:25

ehlo std30.os3.su
mail from:<check@nethence.com>
rcpt to:<check@nethence.com>
data
lala
.
quit

==> expecting refused

STARTTLS ACCEPTANCE

first check that you can pass through

openssl s_client -starttls smtp -connect xc.nethence.com:25
#-crlf

helo YOUR-TRUE-FQDN
mail from:<>
rcpt to:<>
data
...
.

then check that it’s truly enforced

telnet MX-SERVER-ADDRESS 25

at mail from stage, you should get

530 5.7.0 Must issue a STARTTLS command first

NAME RESOLUTION ACCEPTANCE

from a client that does not resolves or reverse resolves, the message should NOT pass through

SPF RECORDS

try to send a message remotely or from internal network and w/o SASL, while being in mynetworks. since you are not one of the advertised MXes, the message should NOT pass through.

mail from:<email@yourdomain.com>

RBL

connect from an IP that should-be-blocked IP e.g. ADSL connection. your message should NOT pass through

EHLO

should NOT pass through

helo SOME-WRONG-FQDN

TODO

try benchmark with smtpping

smtpping https://github.com/halon/smtpping