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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38 views

Next Step in Migrating Exchange 2003 to GMail (SPF risks when changing MX record vs disable SMTP)

Our company has been struggling to migrate Exchange to GMail for last 2 years (I will leave this for /r/talesfromtechsupport). We have two domains on two different ccTLDs, and lately Exchange is just ...
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2answers
448 views

SPF: Difference between v=spf1 include:_spf.google.com ~all and v=spf1 include:spf.google.com ~all

What is the difference between v=spf1 include:_spf.google.com ~all and v=spf1 include:spf.google.com ~all (the first one is with underline character in front of the spf, the second one without)
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1answer
90 views

How to control the originating IPv6 of emails sent by postfix?

In a VPS with 2 IPv4 and 16 IPv6, I send emails with postfix. Each time, the email is sent from one of the IPs randomly Received: from domain.com (a random IPv6 out of my 16 IPv6) Thus, SPF fails ...
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1answer
326 views

SPF: softfail (domain of transitioning email does not designate 2a01:4f8:121:2062::2 as permitted sender)

I am seeing this SPF softfail for emails sent from my server, and I notice that 2a01:4f8:121:2062::2 is an IPV6 address. When I check 2a01:4f8:121:2062::2 it is translated as 0.0.0.2 ipv4, so that ...
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1answer
6k views

Why is Google rejecting mails forwarded from my Postfix server?

I've set up Postfix and created an alias that maps to a gmail account. When I mail from one of my own (google mail) accounts, it goes through, but if someone from the outside mails me, Google won't ...
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1answer
257 views

Mail marked as spam with SPF record allowing server's ipv4 but not ipv6

This question is mostly out of curiosity as I have now updated the SPF record to include the ipv6 address. I have a server and I tested its php email sending ability by sending myself an email from ...
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2answers
4k views

How to setup correct SPF record

I am trying to setup a very basic SPF record. I am hosting my website on Godaddy and using Godaddy's email servers. I am using the php mail() call (I know, I've read a ton of places to use PHP ...
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1answer
183 views

SPF vs. DKIM - The exact use cases and differences

I'm sorry for the vague title. I don't fully understand why SPF and DKIM should be used together. First: SPF can pass where it should fail if the sender or DNS is "spoofed" and it can fail where it ...
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1answer
2k views

Multiple SPF domains in SPF DNS record. To MX or not MX?

My understanding of SPF records is that you don’t create two separate ones, but that you include multiple domains in one record with multiple include statements. My company's existing SPF record as ...
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1answer
46 views

spf records and applications sending emails [duplicate]

I have an application which is supposed to email error codes or confirmation emails to our support email. Using google apps From: Support@mydomain.com to: Support@mydomain.com This software is ...
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1answer
141 views

rDNS setup to prevent emails appearing as spam / phishing messages

We are trying to send email without the email appearing in the spam folder. The emails that we are sending is solicited bulk email. The main problem is that the emails are appearing as phishing ...
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1answer
38 views

How to set SPF TXT for this scenario?

I need to add two mailing list servers, in addition to the normal mail servers, to serve two domains. Hopefully any of the two mailing server can send email for any of the two domains. domain ...
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1answer
437 views

Email authentication without modifying DNS records

Can someone explain how Mailchimp does email authentication without user having to update SPF or DKIM records? Quote from Mailchimp: When you use MailChimp's authentication, campaigns will pass ...
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1answer
144 views

SPF records, combining suggested records

I have a domain that sends automated email using Amazon SES, regular email using Google Apps and a monthly newsletter using MailChimp. I want to combine the three suggested SPF records into one, but I ...
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1answer
87 views

SPF, Sender ID and DKIM signing - Does Sender ID need to be configured if DKIM signing in place?

While learning about SPF, Sender ID and DKIM siging, it seems that Sender ID and DKIM exist to solve similar problems. In addition, Sender ID is discussed in a fairly unflattering light on several of ...
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1answer
182 views

SPF TXT records - do I need to include sub domains for an outsourced sender SPF record

Say that I want to send mail from my own servers at example.com. As I understand it, I can specify the following SPF record and have any server addressed by an A record under example.com included by ...
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1answer
172 views

Spam sent from fake email accounts on my domain [duplicate]

One of my clients is getting thousands of "Delivery Status Notification (Failure)" emails per day and it's replied to random email accounts that don't exist on the domain. The content of the emails ...
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1answer
140 views

How is a sender verified with Gmail's 'Send Mail As' feature?

I have an email account info@example.com with mail.live.com . I also have a Gmail account. I have set up the 'Send mail as' feature in Gmail to send mail as info@example.com, and this works ...
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3answers
2k views

Should I reject email on SPF and/or DKIM failures? [duplicate]

I’m administering a mail server (cPanel/WHM) running Exim. It handles normally a few hundreds incoming emails per day for our customers. I’m not sure if I should reject SPF and/or DKIM failures for ...
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2answers
1k views

policyd-spf is rejecting mail with '?all' SPF records

One of our clients is getting mail rejected from one of his customers. The sender's SPF record is: v=spf1 +a +mx +ip4:12.34.56.78 ?all The mail is not originating from 12.34.56.78, but AFAIU the ...
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1answer
834 views

Sending email from an AWS domain via Google Apps

I have a domain managed via Amazon's Route53 service. I have a Google Apps (free) account with 10 full users. To facilitate more than 10 users (we need about 12-14), I've been using a setup whereby ...
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2answers
1k views

Outgoing mail through isp's smtp server is not getting delivered

What's the problem with the following emails? 1- Diagnostic information for administrators: Generating server: mailrelay002.isp.belgacom.be secretariat@lagereschoolbissegem.be [195.47.247.194] ...
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2answers
7k views

How to avoid messages rejection because of DMARC when sent through Gmail alias?

Many people add ' another email address as alias ' for their Gmail accounts - talking here about public Gmail not Google Apps - and they may use Gmail server not their domain servers as SMTP with the ...
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2answers
462 views

Media Temple, SPF, and Changing IP Addresses

OK...so I have a hosting account with Media Temple and recently had problems with mail servers marking my sent emails as SPAM. I looked into the issue and read it's a good idea to implement SPF which ...
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1answer
90 views

Implementing SPF for a mail server that sends email on its own, with GoDaddy

I have some troubles configuring SPF/DKIM for a VPS with a running instance of Postfix. Thanks to DMARC reports I'm finding and fixing always more issues. Today I have a problem by setting SPF ...
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2answers
359 views

Blackberry & SPF

Some users on my domain use a Blackberry for email. Should Blackberry's servers be included somehow in my SPF record? Thank you much for any advice.
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0answers
307 views

EXIM4 sent mail sometimes rejected, always put in spam. DKIM and SPF pass + reverse DNS

Recently I've been seeing some instances of Your access to this mail system has been rejected due to the sending MTA's poor reputation. in my maillog and have noticed that my emails have been getting ...
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0answers
81 views

SPF and postfix settings. Sent emails aren't delivered

I just finished setting up a Debian server but my emails aren't being delivered to hotmail/live emails (they don't even show up in the spam folder). They are however delivered to Gmail addresses along ...
4
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2answers
292 views

SPF Record with or without plus

Is there any difference between v=spf1 +a +mx -all and v=spf1 a mx -all I am unsure if they do the same thing or somthing different. Clarification would be great. Thank you
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1answer
786 views

postfix mails goes to hotmail junk

I have a problem that I can't solve which is whenever I send an email from my mail server to Hotmail, it gets into the Junk folder. I'm using CentOS 6.3, SELINUX is disabled. Here are my named zone ...
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4answers
4k views

set Google Apps SPF record in Amazon AWS Route 53

I'm using the new AWS GUI for Route 53 to setup my domain records. However, the AWS console won't accept the recommended Google Apps SPF record, v=spf1 include:_spf.google.com ~all (found here). It ...
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2answers
106 views

Spam originating from my account, SPF records did nothing?

Recently I have been receiving emails that apparently originate from my account about Russian hackers, I've set up an SPF record to try and stop this but it has made no difference and I have updated ...
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1answer
577 views

How to correctly add SPF record

I need to add a SendGrid SPF record for my GoDaddy domain, but I'm not sure exactly where to put it. I have an existing TXT record for @ with value of ...
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2answers
139 views

DNS Record for Sending Mail Server

Have 3 servers - web server, mail server and outbound-only email server. The outbound-only email server sends transaction based emails on behalf of the web server (password reset, contact us, etc.) ...
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1answer
256 views

Mail is marked as spam although SPF and DKIM pass

I have configured Postfix to send mail from a dedicated server hosted let's on IP X.X.X.X and domain name example.com. DKIM, SPF always pass when I send mail locally from that host but still ends up ...
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1answer
112 views

Set up spf and dkim, where email domain and sending domain differ

I have two domains: foo.com and bar.com Only foo.com is using Google Apps and thus can send emails. I now have a service running on bar.com\application that uses the email application@foo.com to ...
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2answers
2k views

Mail rejected because of SPF lookup - can a MX record be a CNAME?

We're serving mail for a group of customers, and (only) one of them is seeing (some of) their mails rejected. The situation is: Our server: ourdomain.com -> Gets forward and reverse DNS lookup ...
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1answer
4k views

Gmail is blocking email from my application server

I'm getting the following in my mail logs on my app server: 550-5.7.1 [67.23.15.78] The IP you're using to send mail is not authorized to 550-5.7.1 send email directly to our servers. Please use ...
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2answers
741 views

SPF Records for subdomain sharing mail server

I have two websites hosted on the same server. I set up the second site after I had already set up the first site and its corresponding email server. This is more of a DNS question. The first ...
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3answers
1k views

CNAME domain to another domain, but keep different SPF records for the two?

SCENARIO: mydomain.com is the main website, we do send/receive mail using address@mydomain.com. mydomain.com DNS has got an SPF record "v=spf1 a mx ~all" mydomain.net is just an alias for ...
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1answer
273 views

Configure Exchange to receive email from an internal address with an external IP address

Our company provides email marketing services. Our service is hosted and emails are deployed from our IP addresses. Clients use their email address(es) as the "from" address, and typically, as long as ...
0
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3answers
287 views

DNS and Namerservers query

I have a VPS hosted with 1&1 which also provides mailboxes that we use for day to day e-mailing. Our domain is registered with 123reg and the name servers point to 1&1 . To email our 10k+ ...
0
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1answer
126 views

Checking SPF for outgoing mails

Is there any particular reason why I should not perform SPF checks for outgoing mails? I was reading on some articles that "you should not perform SPF checks for outgoing mails", why? I'm doing SPF ...
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1answer
292 views

Received-SPF: unknown domain of _netblocks2.google.com uses a mechanism not recognized by this client

We've configured SPF for our Google Apps For Your Domain domain some time ago, and resources like mail-tester.com validate it as setup correctly (we also have DKIM, etc). For the past year however, ...
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2answers
668 views

Unable to send mail to hotmail from rackspace cloud

I'm having issue sending mail from postfix on a rackspace cloud instance for my domain. Hotmail says "550 SC-001 (SNT0-MC4-F35) Unfortunately, messages from 198.101.x.x weren't sent. Please contact ...
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2answers
6k views

What does this mean: v=spf1 include:_spf.google.com ~all?

In addition to my previous question, what does this DNS entry mean: v=spf1 include:_spf.google.com ~all ?
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1answer
1k views

How to resolve SPF configuration to allow Google sending mails?

we are configuring DNS for a GMail service, the MX records are configured as to Google says, however, in the DNS check, there is a warning: SPF must allow Google to send mail on behalf of the domain ...
0
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1answer
249 views

Error while sending email using our own server: Sender is probably forged (SPF Softfail)

I have an email account from our own server and I can't send any emails and I'd appreciate any help with fixing it. This is the error I'm getting: Sender is probably forged (SPF Softfail) Our mail ...
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0answers
74 views

SRS + SPF for Exchange Server

Is there a specific way to enable SRS on Exchange, or a similar function, on a SPF enabled domain? I have a SPF Record set to ~all, and noticed that out of office (OOO) emails are failing due to them ...
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1answer
59 views

An SPF setup example

To set up SPF for an OpenEMM server (emm.example.com.sg) for the site: domain: example.com.sg web server: www.example.com.sg EMM server: emm.example.com.sg (say, ip: 201.202.203.204) The ...