Re: SPF Record with Multiple Servers

Ez egy kriptográfiai módszerrel aláírt, MIME formátumban levő üzenet.

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Hello!

Using MX in SPF record is a simple way to describe trivial two-way=20
setups, that is, MX will also send the mails, not just receive them. If=20
you have a non-trivial setup, you can use, for example IP addresses,=20
like ip6: and ip4:. Add every address which from a mail could possibly=20
leave your organization, and that's it, do not use MX. BTW, the syntax=20
is v=3Dspf1, not what you wrote.

2013-04-25 01:32 keltez=C3=A9ssel, Vin=C3=ADcius Ferr=C3=A3o =C3=ADrta:
> I've a question about the SPF setup in my domain.
>
> We have two MTAs: an exchange server that does not use SMTP to relay me=
ssages to the Internet and a Postfix Mail Gateway on the border to send a=
nd receive messages to/from the internet.
>
> The clients connect on the Exchange Server to relay messages to the ext=
ernal world. So an SMTP connection would start in the Exchange, then it r=
elays to the Postfix server and then to the Internet. On the other hand w=
hen a message come from the Internet it first arrives in the Postfix serv=
er and after the processing it's handled to the Exchange server.
>
> The question is: which SPF TXT string I should use?
>
> The Postfix server is my only MX. And I don't know if I should include =
the Exchange Server name in the SPF rules.
>
> I was considering: vspf=3D1 mx -all
>
> But this does not include the Exchange, and I don't know if it's right =
or not.



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