?
Solved

SPF - Best Practice

Posted on 2013-05-12
9
Medium Priority
?
505 Views
Last Modified: 2013-05-16
Hi Guys,

We are trying to setup SPF for a number of clients, but we're not 100% sure what we need to configure to only accept the senders email.

I understand that SPF is a service that blocks spam/spoof emails from senders who pretend they are someone else.

What is the best practice or recommended approach in setting up SPF? Is it best to setup to include mx, ptr, ip, a etc? Or is there another way?

We want to setup so it doesnt disrupt or hinder in any way shape or form between companies.

Apologies in advance, my knowledge is quite basic when it comes to SPF.

Thanks!
0
Comment
Question by:goraek
  • 5
  • 4
9 Comments
 
LVL 84

Expert Comment

by:Dave Baldwin
ID: 39160287
That isn't SPF at all.  SPF is contained in a TEXT record that says who is allowed to send email in the name of your domain.  Microsoft has a page to generate the text for you:  http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/

Definition here: http://www.microsoft.com/mscorp/safety/technologies/senderid/default.mspx

Note also that SPF is not 'automatic'.  Some email services use it and some don't.  It is just another step that you can take to minimize spam being sent in your name.
0
 
LVL 2

Author Comment

by:goraek
ID: 39163327
We have setup TXT entries, and used the above link to check, but it says theres no SPF record.

Any ideas?

This is our current TXT record

mydomain.com TXT v=spf1 include:externaldomain.com ~all

Is this correct?
0
 
LVL 84

Expert Comment

by:Dave Baldwin
ID: 39163411
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 
LVL 2

Author Comment

by:goraek
ID: 39164106
How do I authorise multiple mail servers?
0
 
LVL 84

Expert Comment

by:Dave Baldwin
ID: 39165665
Don't know, never tried that.  Here's the 'official' pages: http://www.openspf.org/
0
 
LVL 2

Author Comment

by:goraek
ID: 39173186
Yeah I checked.

When it has "include" what does that mean?

Has anyone had any experience in SPF?
0
 
LVL 84

Accepted Solution

by:
Dave Baldwin earned 1500 total points
ID: 39173257
Many of us here use SPF.  http://www.openspf.org/ and http://www.microsoft.com/mscorp/safety/technologies/senderid/default.mspx are the authorities on SPF.  'include' and all the other options are explained here: http://www.openspf.org/SPF_Record_Syntax

Click on "Request Attention" if you want some others to look at your question.
0
 
LVL 2

Author Closing Comment

by:goraek
ID: 39173600
Good info
0
 
LVL 84

Expert Comment

by:Dave Baldwin
ID: 39173616
Thanks for the points.
0

Featured Post

Evaluating UTMs? Here's what you need to know!

Evaluating a UTM appliance and vendor can prove to be an overwhelming exercise.  How can you make sure that you're getting the security that your organization needs without breaking the bank? Check out our UTM Buyer's Guide for more information on what you should be looking for!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Unable to change the program that handles the scan event from a network attached Canon/Brother printer/scanner. This means you'll always have to choose which program handles this action, e.g. ControlCenter4 (in the case of a Brother).
In this article, the configuration steps in Zabbix to monitor devices via SNMP will be discussed with some real examples on Cisco Router/Switch, Catalyst Switch, NAS Synology device.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
This video Micro Tutorial shows how to password-protect PDF files with free software. Many software products can do this, such as Adobe Acrobat (but not Adobe Reader), Nuance PaperPort, and Nuance Power PDF, but they are not free products. This vide…

569 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question