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Re: [suse-security] Email Spoofing
Quoting Markus Gaugusch <markus@xxxxxxxxxxx>:
> I would suggest to use SPF (http://spf.pobox.com). This way you can
> restrict the IP's that are allowed to send mails that end with your
Unfortunately, SPF breaks forwarding. For instance, if I host my web site at a
hosting provider and have the e-mails sent to it forwarded to my cable modem
account, SPF will block them.
There is no way around this without the hosting provider changing their e-mail
I previously announced my mail server with SPF until my customers started
complaining that they couldn't send mail to such people. As an ISP, there was
nothing I could do about it, short of removing the SPF entries from my DNS.
SPF is not a viable solution.
Check the headers for your unsubscription address
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