If you use Gmail, check the headers of any email going into Gmail, you will notice Google is performing SPF checks on incoming email. So the weighting could result in added points in a spam assassin server as an example. The server accepting the email has to have SPF in place as part of its mail filtering. Having ~all on the end of the record indicates that email from other servers should still be accepted but it will be given a weighting that indicates it could be spoofed. The TXT record shows that _ and my IPv4 and IPv6 addresses are the only ones allowed to send email that originates from addresses. Here's a quick tip for dig users, add +short to clean up that output. Ok, there is a bunch of info in the output - we are focusing on the TXT record in the ANSWER section. flags: qr rd ra QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
>HEADER<<- opcode: QUERY, status: NOERROR, id: 26126 On Windows you could use the nslookup tool, just remember to set the type to TXT.
Lets take a look using the DNS lookup tool dig. Google mail servers are included in my SPF record as I use Google Apps for as an email client for support operations. By setting the SPF record I have indicated that only my servers and Google servers are allowed to send email on my behalf. My domain wants to send email to people all around the world when they sign up for services.
Spamassassin spf check how to#
Heard of SPF but not sure how to pass an SPF check? Lets get back to basics and have a quick look at the SPF DNS record that can make your email delivery more reliable and less likely to hit the spam folder.Īn SPF record is a DNS TXT record that contains the IP addresses of the servers that are permitted to send email for a domain.
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