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Questions tagged [spf]

Sender Policy Framework is a standard by which the owner of a domain uses a specially formed DNS record to advertise which hosts are authorized to send email for the domain.

Sender Policy Framework (SPF) is a technique to prevent e-mail sender address forgery. With SPF system administrators add information about allowed senders for particular domain in a DNS server's TXT and/or SPF record.

Please have a look at the canonical question What are SPF records and how do I configure them.

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Where can I find a comprehensive guide for starting to understand and use SPF records?

I haven't done much with SPF records before. I understand that the concept behind them is to specify which servers (ip's) are allowed to send mail signed "from" a particular domain - which is increasingly important as it seems e-mail services are…
cwd
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How do I setup a SMTP ID to my server?

I am trying to increase email deliverability, from what I read, most important things I need to have set are SPF records, DKIM and sender ID, I set SPF and DKIM, but... "sender ID" is same as "SMTP ID" from email header? how do I setup a sender ID…
adrianTNT
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Exim mail server: When I send test mail to my Gmail, how can I hide my hostname after "via"?

I just set up Exim for sending email from a website using this guide: http://library.linode.com/email/exim/send-only-mta-ubuntu-10.04-lucid All done with no problem. When I open a test mail I sent to myself, in the "from" field, instead of showing…
Michael
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Should I use SPF spam protection or DNS blackhole lists for Server-wide mail settings?

It seems that my Server-wide mail settings are preventing some legitimate email from being sent and received. I have used both SPF spam protection and DNS blackhole lists (zen.spamhaus.org) for several years but lately I've lost a few clients…
Mitch Moccia
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SPF and importance "a", "ptr" and "mx"

Let's say I have three domains: domain1.com domain2.com domain3.com For each, I have the following SPF records: domain1.com v=spf1 ip4:x.x.x.x ip4:y.y.y.y include:domain2.com ~all domain2.com v=spf1 ip4:c.c.c.c ip4:d.d.d.d include:domain3.com…
Willy
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why spf soft fail appear hard fail in gmail

abc.com. 1D IN TXT "v=spf1 a mx ipv4:10.11.x.x -all" This is result i got using dig root#dig txt abc.com. But when i send mail to my gmail from this domain, gmail says softfail and 10.11.x.x is not allowed to send mail for this mail. Can…
vnix27
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Confused about SPF Record setup

I'm confused on how I should set up SPF records for my multiple domains. Here is my configuration: the setup is: (a) domain1.com points to server1 (b) mail.domain1.com points to server2 (c) domain2.com is a vhost in server1 (d) domain3.com is a…
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Changing SPF (Sender Policy Framework) record for Google Apps

My boss asked me to set up Google Apps for a client and basically I have done everything including setting up MX records in DirectAdmin and re-creating the email accounts in Google Apps. I also sent a few test emails to ensure that it actually works…
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SPF problem with incoming emails

I use sendmail MTA and dovecot and have SPF configured, my domain txt entries: xx.pl descriptive text "IN" "v=spf1 ip4:x.x.x.x ip4:x.x.x.x ip4:x.x.x.x ip4:x.x.x.x a:mail.yy.pl a:mis.xx.pl a:smtp-out.yy.pl mx -all" xx.pl descriptive text…
kamoks
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SFP record setup for single server

I have a single server Domain: mycompany.com Server: mail.mycompany.com MX: mail.mycompany.com Would this record work "v=spf1 ip4:38.28.xx.yy a:mail.mycompany.com mx:mail.mycompany.com ~all"
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550 error emailing on behalf of clients using spf

In response to the answers to this question I tried to set up the correct 'from', 'sender' and 'return-path'. I am not sure how this is set up in .net (particularly 'return-path'), but I have set the following: mail.From =…
ptutt
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SPF include:domain.com problem

I have a domain who's users send email from an isp's smtp server. I'm trying to set up SPF for that domain using: v=spf1 a mx include:mail.isp.com ~all When I checked the record using The 2nd tool at http://www.kitterman.com/spf/validate.html it…
Syntax Error
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Google Apps - SPF Softfail when sending to same domain

I am using Google Apps to send mail through my private domain. I have used WHM to set my DNS TXT record to "v=spf1 include:_spf.google.com ~all" for mydomain.com. as advised by Google. When I send a bunch of SMTP mails, I get SPF passes to emails…
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What is the best approach for setting up a good, secure smtp server on Debian?

Which server do you recommend? (postfix?) Which configuration for authenticating users for sending mail? Which setups for making it inbox friendly (dkim, spf, domainkey etc)? Is there some detailed guide to walk a newbie through all or most of…
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Windows Server 2003 Enterprise - How Can I Add a SPF Record to DNS?

I'm in the DNS management console, and I can't find SPF in the new record type list. What do I need to do to create a SPF record?
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