Question

SPF record ?

Asked by: veerandra

Dear sir,
What is spf record ? What is the role of spfrecord in exchange servers ?
How to create the spf record and How to check the spf record.
Is there any problem for SPF record how to trouble shoot the spf record ?

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Asked On
2008-03-30 at 20:50:02ID23281573
Tags

Microsoft

,

Exchange

,

2003

,

.

Topic

Exchange Email Server

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: MattShadboltPosted on 2008-03-30 at 21:00:02ID: 21243096

An SPF record is configured in your public DNS records and is a record specific to fighting SPAM.

http://en.wikipedia.org/wiki/Sender_Policy_Framework


Cheers,
Matt

 

by: kieran_bPosted on 2008-03-30 at 21:44:28ID: 21243198

In addition, the point of an SPF record is as a way of verifying that mail servers are authorised to send as a specific domain.

For example, without SPF;

My server connects to your server and says, "Hi, I am responsible for microsoft.com, I have an email for joe@yourcompany, here you go" and your server accepts it.

WITH SPF;

My server connects to your server and says, "Hi, I am responsible for microsoft.com, I..." your server interrupts with "Let me just check this out; you are 10.0.0.1, Microsofts SPF record says that only 192.168.0.1 is allowed to send, Goodbye"

It is not foolproof though, you can't actively block people with no or incorrect SPF records - there just aren't enough people with correct records to start blocking.

Kieran

20120131-EE-VQP-002

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