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SPF Record and mail Spoofing

Answers

  • An SPF record is a type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send email on behalf of your domain. The purpose of an SPF record is to prevent spammers from sending messages with forged From addresses at your domain



    https://technet.microsoft.com/en-GB/library/dn789058%28v=exchg.150%29.aspx?f=255&MSPPError=-2147217396

    http://techgenix.com/managing-spf-and-reverse-dns-exchange-server-part1/


    Saturday, August 19, 2017 8:39 AM
  • SPF may not be perfect, but you’re still much better off using it than not using it. Emails can still be delivered without setting up SPF, but doing so improves your chances. Having an SPF policy provides an additional trust signal to ISPs so you can increase the likelihood that your emails arrive in the inbox. The SPF policy can also help mitigate the backscatter of bounce and error notifications when spammers try to abuse your domain. Ultimately, SPF won't solve all of your delivery problems, but it’s an additional layer that, combined with DKIM and DMARC, can improve your delivery rates and prevent abuse

    I hope you will find this helpful...

    Saturday, August 19, 2017 8:42 AM

All replies

  • An SPF record is a type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send email on behalf of your domain. The purpose of an SPF record is to prevent spammers from sending messages with forged From addresses at your domain



    https://technet.microsoft.com/en-GB/library/dn789058%28v=exchg.150%29.aspx?f=255&MSPPError=-2147217396

    http://techgenix.com/managing-spf-and-reverse-dns-exchange-server-part1/


    Saturday, August 19, 2017 8:39 AM
  • SPF may not be perfect, but you’re still much better off using it than not using it. Emails can still be delivered without setting up SPF, but doing so improves your chances. Having an SPF policy provides an additional trust signal to ISPs so you can increase the likelihood that your emails arrive in the inbox. The SPF policy can also help mitigate the backscatter of bounce and error notifications when spammers try to abuse your domain. Ultimately, SPF won't solve all of your delivery problems, but it’s an additional layer that, combined with DKIM and DMARC, can improve your delivery rates and prevent abuse

    I hope you will find this helpful...

    Saturday, August 19, 2017 8:42 AM
  • Hi,

    Thanks for contacting our forum.

    An SPF record is a TXT record in DNS that begins with v=spf1. It includes a list of IPs that sending domain owner has specified as permitted to send email for that domain and it also informs the recipient mail server what to do if an email is received from an IP that is not on the permitted senders list. 

    Please refer to the following article for detailed steps:

    https://blogs.technet.microsoft.com/industry_insiders/2006/01/24/using-the-sender-policy-framework-with-exchange-sp2/

    A Sender Policy Framework (SPF) Primer for Exchange Administrators

    Block spoofed email - Part 1 | Exchange 2010 – 2016

    Please note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information. And the changes made in the above blog is not supported officially by Microsoft.

    Hope it helps.


    Regards,

    Jason Chao


    Please remember to mark the replies as answers if they help.
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    Monday, August 21, 2017 3:17 AM
    Moderator