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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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Correct SPF record

I have been asked to apply DMARC protection to a domain. Part of this requires me to add an DNS record to the domain management console, however I have come across a stumbling block. The DMARC checker says there is a problem with the SPF record of…
Max Johnson
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Email goes to spam even with valid SPF, DKIM and DMARC records, dynamic rDNS on AWS instance

I have an instance on AWS and fighting with sending emails through cPanel. All records are OK (checked on MX toolbox): SPF, DKIM, DMARC at the cPanel level and the WHM level (hostname). Even rDNS is OK. Server IP is not flagged or blacklisted…
Adrian P.
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Managing SPF with multiple users on an email provider

I'm using Ipower for web and email hosting. I was recently made aware that SPF and DMARC were set to neutral, causing all of our outgoing emails to go to spam. I updated both records and they worked for a bit. My issue is that some of our users have…
Neil C
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How to set spf record to let my 2 server send mail by my domain?

Hi I'm using a directadmin server's hosting. when my website send mail by php, it will use user@mydomain.com to send email out but mydomain.com's email is hosting by google workspace I was set to v=spf1 include:mydomain.com include:_spf.google.com…
simonlo
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SPF include a main domain & its subdomains

I need to configure SPF using ( include ) for one domain and its subdomains too at the same time Example : domain1.com has SPF for main domain + 4 subdomains domain1.com has spf v=spf1 ip4:IPADDR1/24 -all sub1.domain1.com …
Elizabeth F. Compton
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Publishing Exchange Server public IP address in a hybrid Exchange setup?

I'm currently using the Hybrid Exchange Online and Exchange Server OnPremise setup. I have included the IP addresses of all my Exchange Servers in the below TXT record, I wonder if it is really necessary to prevent email flow issues? v=spf1 a mx…
Senior Systems Engineer
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spf blocked- can't send emails to people who uses gmail

I use 1and1 Ionos for my email server - I can't send emails to people who use google gmail spf record v=spf1 include:_spf.perfora.net include:_spf.kundenserver.de ~all I am not sure what I can do - I updated spf 2x Need help here SMTP error from…
Victor Castillo
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SPF denying emails, and different IPs sender

I'm pretty new to email server configuration, so now I'm trying to make my SPF work well but I'm facing a strange problem. My SPF is like this v=spf1 +mx +a +ip4:xxx.xxx.xxx.xxx +include:_spf.google.com ~all so with this we can send emails from our…
Anderson Silvestre
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Debugging occasional "Temporary failure in name resolution"

I have an internet-connected mailserver. A friend wants to send Email to one of the hosted domains. occasionally smtpd reports: Jun 24 00:56:22 myserver postfix/smtpd[xxx]: warning: hostname e2i740.smtp2go.com does not resolve to address…
rew
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gmail is rejecting my e-mails to a recipient with a gmail address with a 550-5.7.26

I have a fairly straight forward email setup using postfix. Within my house running on a raspberry-pi to which my router forwards all ports. I have a postfix instance that can see incoming mail. A MX record for my e-mail domain…
akc42
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Network Solutions DNS not always returning DKIM and SPF records

If there is a more appropriate place to ask this or it is a duplicate, please tell me. I have a client who hosts their domains with Network Solutions. Some of their emails were bouncing due to stricter authorization requirements enforced on certain…
jdmayfield
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SPF Too Many DNS Lookups issue

In our scenario, We're running into an issue with our SPF records in route53. We are receiving SPF Too Many DNS Lookups because we are using multiple mail services. Is there a way to resolve this? I saw one thread stating to run a look up on the…
Santosh Baruah
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postfix to gmail silent delivery failure

With the impending turndown of free hosted Google workspace accounts, I'm trying to install my own mail server using postfix/dovecot/opendkim. Mostly, it's working and for many of the services I've tried delivery is flowing. However, when I send an…
PaulProgrammer
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Softfail on forwarded emails sent through Yahoo mail - Is there a fix?

happy to be here. Excuse me for the wall of text but I am trying to help a friend who wants to keep on using his Yahoo mail for sending emails from his business email address. His mail server is on cPanel with shared IP address 212.16.186.119 and we…
Manou Allou
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How can it be possible dkim fails whereas spf pass

I have set up a postfix which sends emails. I have configure spf, dkim and dmarc (with p=none). I have checked with mail-tester: spf and dkim work fine. I have set up a dmarc rua in order to receive dmarc reports. I have seen something strange in…
Bob5421
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