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.

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23 views

Originating (non-critical) emails from a “less-trusted” host

Background We have a webapp running on webapp.example.com that (amongst other things) sends messages by email from time to time. These messages are non-critical: whilst we would like to make a best ...
1
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0answers
34 views

SPF check based on client IP instead of MTA IP?

Setup On a client computer with IP address a.a.a.a, there is a mail client that uses SMTP to send emails via company email server example.com with IP address b.b.b.b. The company email server ...
3
votes
2answers
134 views

Route 53 - Should I duplicate my SPF records as TXT records?

Amazon Route 53 supports both "SPF Records" and "TXT Records". Most documentation I read tells me to list my SPF Record as a TXT Record. I understand that the SPF Record is a newer standard. Is it ...
0
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1answer
28 views

Proper Setup of SPF Record

OK, so, i'm only so familiar with how the SPF system works, and my domain is being used to send all kinds of spam. Here is my current spf record: v=spf1 ip4:web.host.ip ip4:108.60.203.190 +a +mx ...
0
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1answer
47 views

Gmail ignoring SPF record

I have a domain whose SPF record looks like this: "v=spf1 mx ip4:6.7.8.9 -all". The record is valid, and to my understanding implies that allow mails only from: The server that is MX record for the ...
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2answers
33 views

AWS: Kitterman SPF record test failing

I have had a couple of emails not arrive in my inbox. One resent the email and I received it, the other told me that the error was: non valid MX response I have been looking at my AWS SPF records and ...
7
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3answers
92 views

Does “~all” in the middle of an SPF record signal the end of the record when it is parsed?

Our company's SPF record format is as follows: "v=spf1 include:_spf.google.com ~all a mx ip4:X.X.0.0/23 include:spf.example.com ?all" So we have an "~all" in the middle of our SPF record. On the ...
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0answers
63 views

Can't send emails to Hotmail and AOL addresses

I've configured Postfix on a Debian system and I can send emails to all types of email accounts exept to Hotmail and AOL. I presume the emails get killed by Hotmail's and AOL's spam filters. I receive ...
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0answers
31 views

What is the definition of an SPF SoftFail? [duplicate]

1) In a "How To" I see: "~ tilde signifies a SoftFail should be issued". I don't get it. a) Who should issue the "SoftFail"? b) Who should receive the thing issued? c) What exactly is being ...
1
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1answer
45 views

Conflict between wildcard DNS entry and SPF

I have a domain set up on Amazon's Route53, and it seems the following entries are not going to work (actual values replaced, obviously). Can anyone advise on how this should be set up? This is the ...
1
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1answer
72 views

How should my SPF record be set up, or is it even necessary?

I have a domain (fiestyturtles.com) registered at namecheap.com, and hosted at a shared webhost (hostpc.com). But I've moved the email handling of my domain to google apps, I think I set this up by ...
0
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0answers
13 views

What is the correct SPF setting if I want a specific IP, hosting provider's MX, and GMail to work for sending emails coming from my domain? [duplicate]

I have never set up an SPF record, so I am trying to make sure I understand what I am doing before causing all sorts of havoc. Let's say I have a domain example.org which is being hosted by ...
5
votes
3answers
511 views

Have a valid SPF record but still can spoof my email

I have set up an SPF record for my domain, but I still can spoof email-addresses for my domain using fake email services like this one: http://deadfake.com/Send.aspx The email does arrive to my gmail ...
-2
votes
1answer
36 views

Adding SPF record for second domain, but I don't yet have an SPF record for Gmail [duplicate]

I am familiar with the basics of SPF but I am having trouble determining exactly what I need for my setup. I have my email done through Google Apps to send and receive email for my domain, ...
1
vote
2answers
126 views

DNS and SPF configuration for Microsoft Exchange

We've started receiving spam with spoofed addresses from our own domain. So I'm trying to get my PTR and SPF records etc correct to prevent it. We're running Exchange 2010 on site with one server ...
-2
votes
3answers
98 views

Is there any standard for DNS <-> IP authentication?

I'm looking to implement an authentication mechanism which allows to enforce access policies based on the domain name of the client. The authentication server uses the information available in the DNS ...
4
votes
1answer
294 views

What does MX in SPF mean? [duplicate]

I'm setting up an email server, and I'm a bit confused by SPF. Following some examples, I set my SPF record as follows... v=spf1 mx ip4:1.2.3.4 mx:mail.mydomain.com ptr:1.2.3.4 -all I follow what ...
3
votes
1answer
80 views

Why am I getting these emails?

Awhile ago I noticed that email messages from my domain is not immediately delivers by google, and I'm getting an smtp error message from google server. I don not remember the exact wording of that ...
0
votes
2answers
69 views

I am able to receive mails but unable to send via my SMTP server?

I have a shared hosting server from hostgator, in which I created an email 'support@mydomain.com'. Then I enabled both DKIM and SPF (as I read on a few threads that SPF should be enabled to ensure a ...
0
votes
1answer
70 views

Failed Gmail SPF check when importing mail through IMAP from our mailbox when original email was sent with ESMTP headers

We have a strange situation: we receive an email with ESMTP headers in it our server accepts it, it's fine we import that mail in Gmail like any other emails from our boxes Gmail makes SPF check ...
6
votes
2answers
227 views

Failed SPF for email imported to Gmail because of client IP instead of server's in message when sent through SMTP from one local box to another

We have a linux (Debian) VPS with domain (let's say example.com with MX mail.example.com) that has SPF set up. There is dovecot+exim running. There is also Direct Admin on top of that. When I send a ...
0
votes
1answer
84 views

SPF records when sending multi-domain emails from one host

We have a CMS system in which multiple customers run their websites from a single virtual machine. Pages generated by the CMS allow forms to be filled in, which trigger emails to be sent. I am having ...
3
votes
1answer
50 views

SPF record for my domain is not being detected

I have a domain (qplum.co) set up at NameCheap. I am trying to set a TXT record for setting up SPF for Mandrill but for some reason, this record is not being detected at all by any of the tools. This ...
0
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1answer
44 views

Can I use include and redirect in same SPF record?

My current SPF record is as below Host Value TTL myexampledomain.com "v=spf1 redirect=_spf.mailhostbox.com" 1 Day I am using 2 free email ...
1
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1answer
175 views

PermError SPF Permanent Error: Void lookup limit of 2 exceeded

I am trying to setup SPF on a server - mail works fine and validates according to mxtoolbox and other online checks but when I check it using http://www.kitterman.com/spf/validate.html I get an error: ...
0
votes
1answer
27 views

Dynamically set SRS_DOMAIN

I have a mailserver forwarding mail and using postsrsd for SRS. Since postsrsd uses postfix's mydomain setting to alter the Return-Path, is there a way to set the SRS_DOMAIN for forwarded mail based ...
-1
votes
1answer
29 views

spf record fail on forwarded mail

I've set up Postfix, Dovecot and MySQL according to this tutorial from linode. In the virtual aliases table I have an account which forwards to my gmail. Because these messages are then being ...
0
votes
2answers
45 views

One email address recognized as spam [duplicate]

Emails send from some of the addresses in one domain are marked as spam by multiple email clients. Since just few addresses within the domain are marked as spam, I do not think it is a domain problem, ...
0
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0answers
97 views

Configure SPF for gmail account

I am really new to this @ v=spf1 include:_spf.google.com ~all 1 Hour I have added the above spf setting for admin@studentclutter.com as it is a google apps email account However, I am getting ...
0
votes
1answer
31 views

What is the difference between -all and ~all in a DNS SPF record? [duplicate]

I've found that our current DNS SPF record uses the ~all keyword, but in most examples I've seen -all used. What's the difference between the two?
0
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1answer
69 views

SPF Softfail when Txt Record Exists

I am getting softfail for SPF and Sender-ID and I tested it by sending an email to check-auth@verifier.port25.com. My Set-up: 1 VPS hosting 1 website Postfix for Send only emails No incoming ...
0
votes
1answer
71 views

Gmail SPF misconfigured

The SPF entry for gmail.com is a redirect to _spf.google.com: $ dig gmail.com txt @8.8.8.8 +short "v=spf1 redirect=_spf.google.com" _spf.google.com is a redirect to 3 other entries $ dig ...
0
votes
2answers
47 views

Multiple SPF DNS Record entries

We are currently in the process of migrating our on-premise Exchange environment to the O365 cloud but in the meantime I need setup a SPF record for current outgoing email and for the O365 pilot ...
2
votes
2answers
183 views

Do I need to Set-up PTR record in SPF Setting?

I have set-up the RDNS from my hosting provider for the ip address to resolve to "maximus.example.com". After that, do I also need to add the PTR records to the SPF Text details in my DNS zone file as ...
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votes
2answers
144 views

I can't recive emails and all outgoing emails go to spam folder [closed]

I recently bought a VPS server at OVH.com to host the web of one of our business and I'm having problems to correctly configure the DNS to be able to send and recive emails. Right now i can't send ...
5
votes
2answers
323 views

Gmail SPF fail based on client IP

Gmail is failing SPF check based on the client IP. These are the relevant headers: Received-SPF: fail (google.com: domain of johndoe@example.com does not designate 164.77.240.58 as permitted sender) ...
1
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1answer
88 views

Are “via” and “on behalf of” headers determined by both DKIM and SPF?

To get rid of the "via" and "on behalf of" headers in Gmail and Outlook, do I need to set both the DKIM and the SPF records, or are DKIM records enough? We recently changed our SMTP provider from ...
2
votes
2answers
57 views

Order emails from online shop not delivered due to SPF errors

I have my domain served by two servers with different IP addresses: one for main website and another for online shop. When a customer places an order, among other things, an email is being sent to an ...
2
votes
1answer
97 views

SPF issue with SpamAssassin

I have an internal management app for a small company, written in Python and running on a Linode VPS, with which users can send occasional emails to their customers. The emails are quite ...
0
votes
0answers
24 views

IPv6 upgrade broke my SPF? [duplicate]

I run a small custom ecommerce website for a client. I've recently migrated from Ubuntu 12.x to Ubuntu 14.x at a major cloud provider. This came with the benefit of a free/mandatory upgrade to IPv6. ...
0
votes
1answer
80 views

Prevent Email Going to Spam [duplicate]

I've set up my own server and I'm really struggling to stop any outgoing email go to spam. I've used allaboutspam and mail-tester.com to test it and they both come back with perfect results. No ...
0
votes
1answer
243 views

How to configure SPF and DKIM to prevent mail going to spam folder

When creating a mail with PHPMailer my emails are getting sent to the spam folder of my recipients mailbox I have been told I need to configure my SPF and DKIM correctly, I think I have done this ...
-1
votes
1answer
37 views

What do the + signs do in these DNS TXT records? [duplicate]

Is there a specific reason why some records contain the '+' sign and others do not? Are these handled similar to a common search function where you can preface terms with + to include them, but it's ...
0
votes
1answer
45 views

Is SPF record necessary for single domain IP?

My question is simply this - I have a domain where all the DNS records to a single box. Do I need to setup an SPF record in this instance as SPF is designed for where a different IP is sending emails ...
-1
votes
2answers
36 views

E-mail reputation using our domain as the from sent by e-mail marketer

My boss wants to send a marketing e-mail to a large group of our customers. I personally feel that it's outside of our core business and don't support it, but that's about all I can do. Normally the ...
0
votes
2answers
244 views

Exim how to configure SPF

I'm playing with Exim trying to create a mail server for a company, basically i'm able to send email without problem using command line or via localhost. I was trying to set SPF header but I can ...
2
votes
1answer
145 views

Postfix SMTP server gets “550 Requested mail action not taken: Invalid IP”

I have a SMTP server named smtp-ca.mdpi.com and when sending emails to some specific chinese email domains, I am getting back: 550 Requested mail action not taken: Invalid IP<64.15.147.140> (in ...
-2
votes
1answer
103 views

DNS, SPF Web Form, Mail not arriving [duplicate]

I need to be able to receive emails from my php webform on my website, I use Google Apps for the mail recipient and my website is hosted with Godaddy. I receive email from other places and I have ...
2
votes
1answer
88 views

Mails from relay server fails spf

An email sent by a server administered by me bounced back saying it failed the SPF check. Looking at the bounce message it had an IP different to that of the server sending the email. Then I found ...
1
vote
1answer
231 views

Postfix as email forwarder to gmail, SPF problems

I'm trying to configure postfix as forwader to gmail. I've successfully onfigured the virtual aliases for the domains I'm hosting and that I want to redirect, but the Gmail SPF verification is failing ...