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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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Way to open up SPF to all IPs just for a subdomain?

I know this is a bit of a weird / silly question, but we have a sub-domain which acts as a way for our hotel owners to communicate with clients. messages.mydomain.com. What happens if they have a unique username (abcdef@messages.mydomain.com), which…
Andrew Newby
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Postfix working on separate server having issues delivering mail to a specific domain

I have the following situation. My main domain is pointed to a Hostgator account. Because of bad performance of the site, the client decided to give DigitalOcean a go, but leaving the e-mails on Hostgator. So, at the moment the components are like…
Mihail Minkov
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SPF- and DKIM- align fails on a few emails from a larger batch

We are sending large numbers of emails (hundreds of thousands) mostly for our clients. Of course, we have configures SPF, DKIM, and DMARC records properly for all domains who use us. We pass all tests on various SPF and DKIM validators, and vast…
TomS
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Create SPF TXT for Wildcard Domains

Today I use DigitalOcean as hosting my software. Our platform is a SaaS that sends emails from wildcard domains, example: purchase@subdomain.example.com; purchase@another-subdomain.example.com; Email services like Gmail, Outlook, etc, require SPF…
Tom
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Gmail couldn't verify that MyClientSite.ie actually sent this message (and not a spammer)

I'm having problems with delivery of emails from an application on a web server to Gmail. Gmail is displaying a round circle with a question mark, instead of the first letter of the sender, and hovering over it gives the message in this post's…
KevInSol
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SPF for zoho mail servers

I have zoho domain mails. for Spf verification Icreated as pe their instruction as follow as. name : @.vernia.in Text "v=spf1 include:zoho.com ~all" and saved. But on verification it says "We are unable to get TXT record for SPF right now" The mail…
Vernia Digital System
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Does record domain "include:" also refers to subdomains?

I have a doubt setting up my SPF record. I would like to know if I set up an include record in the SPF record will also be "including" the subdomains of that principal domain that I have included?. Let's take a look of an example in my…
Santiago
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I have set the DKIM record but my emails is not signed?

I have set the DKIM record on my DNS server provider (Cloudflare) and i tested it using different online tools which all says that my dkim record is valid but all my messages i sent dont have DKIm signature on it which cause the messages sometimes…
Islam Mohamed
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SPF record permerror showed in an email header, but no reason for it

Our customers are complaining about the spam issue. There are a number of spam emails which are not tagged as spam emails. These spam emails were sent from forged seneder address, which means our SPF record does not work. We have set up the SPF…
yifan
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SPF Outlook Web App (OWA) undeliverable email

PROBLEM: Outlook.com web app (OWA), synchronized with my local server via IMAP and SMTP(STARTTLS), returns "Undeliverable message" for all messages sent. PROPOSAL: (rejected) This returning message points the issue comes up with the SPF and sugests…
Daniel Ramos
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Emails go to spam ( Reverse DNS is set , DKIM pass , SPF pass , DMARC pass )

It's been now 3 days that I am struggling with configuring my emails to go to the inbox. I have a VPS server at OVH and a domain name. I have configured everything in virtualmin with OpenDKIM and Postfix and used various check tools and everything…
Jahir Nabil
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SPF and DKIM configuration Ubuntu 18.04 fails

I have been following this tutorial from DigitalOcean. I have followed every detail but nothing seems to work as expected. Assuming that my FQDN is the following: mydomain.com. Here are my details: SPF (DNS): ~$ dig mydomain.com txt OUTPUT: ;;…
Waiyl Karim
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DNS records not updating - total amateur

I'm a business management student doing an internship at a small company. They publish an e-mail newsletter through a digital marketing website every month, and I was going to publish it yesterday. Everything seemed to be fine until I hit "Send" and…
TheMöet
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Concerns about SPF for external provider

I´m searching for some arguments to avoid the creation of an SPF record for an external survey provider. Example: Division inside a company (abcd) wants to send survey mails to external recipients with survey@abcd.com via an external survey…
MRae
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How do I configure mailserver SPF records under CloudFlare?

For a while now I have been using Google Apps for Business to provide email services for my domain. I'm in the process of setting up a new storage server and want notification-type emails to be handled separately on the local server. I've set up…
dcrdev
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