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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338 views

spf record setup

Emails sent by mta from my server recognizes by spam filters as spam and there's message : Received-SPF: neutral ... Actually, I am not spammer :) So, I googled around these questions and found that ...
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1answer
221 views

Is Sender Policy Framework (SPF) effective in preventing Phishing emails?

As defined in RFC4408, Sender Policy Framework only checks the envelope sender (aka MAIL FROM). The From: header is not being tested. As it is the value of the From: header which is usually displayed ...
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43 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 ...
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1answer
348 views

gmail contacts IP from SPF and fails to send mail to some domains

I have strange problem with my SPF records and gmail MX. I have this SPF setup v=spf1 a mx ip4:IP1 ip4:IP2 include:_spf.google.com ~all In this case, if I send an email to two specific domains, ...
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1answer
1k views

SPF blocking some emails. How to complete disable it?

We have configured a SMTP server on IIS. We have not configured any SPF rule. Some emails are going straight to the badmail folder. Most of them have this error message: Address does not pass the ...
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1answer
115 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 ...
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1answer
173 views

Dns filezone setup with mx and spf

I am trying to create a mail server. I bought the domain mastermails.info on godaddy.com. I am struggling with the setup of DNS. Whenever I change something in the MX record to make my server ...
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1answer
48 views

Google gmail block for no ptr of 4to6 ip address

When mail server got only ipv4 address and enabled 4to6 interface, gmail server block mail because of no ptr record of 4to6 address. Why...? Isn't 4to6 address not global standard...?
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1answer
142 views

DNS Redirect Website to another Server

I have two servers, server 1 and server2. The name serververs of the domain points to server1. 1.I have this configuration regarding Server1 DNS Zones: domain.com. 1200 IN A server2-ip Edit ...
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1answer
44 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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1answer
163 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
312 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 ...
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1answer
342 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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1answer
39 views

I have a mail server that hosts several client emails but 1 in particular is being blocked because of its SBRS score

If I was hosting emails for 3 clients and my reverse DNS is mail.allclients.com and I am hosting for client2.com, client3.com etc. What would be the rDNS for client3.com? Would it reflect the rDNS of ...
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1answer
434 views

Failed reverse DNS and SPF only when using Thunderbird!

I have a reverse DNS and SPF records correctly setup for my mail server. Sending webmail from it works perfect. The problem is when Thunderbird sends out emails, it is using the client's IP address ...
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107 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 ...
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0answers
159 views

Sendmail on CentOS 6, with SRS

I do some mail forwarding, but I'm also a big fan of SPF; I'm aware that I have a problem. While my mail server was running Centos5, I was using pysrs as a milter, and it worked well - but it hasn't ...
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9 views

Is DMARC helpful to me if I don't need reporting?

I have SPF and DKIM setup and working for the email domain I administer. The next recommended step is to setup DMARC since SPF and DKIM are both in place. What are the benefits of using DMARC if both ...
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60 views

New Exchanger Server installation - Email marked as spam on hotmail/outlook

New to the email hosting scene - running an Exchange 2013 box. Email is always (literally, always) marked as spam when sending out to my outlook.com account. Whereas if its sent to an email address ...
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32 views

SPF record not being detected by gmail

I recently added SPF record to my server & it passes all the results required. However sending email doesn't detect SPF record. The method I use to detect is whether gmail shows 'mailed-by'. I ...
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0answers
189 views

Mail marked as spam (Gmail/Hotmail): IP not on blacklist, DKIM Valid, SPF Valid and DMARC valid

I'm trying to send mail from my own domain (which is 15 days old now) but I'm having some troubles. Check the following mail body: Delivered-To: ------@gmail.com Received: by 10.25.89.200 with SMTP ...
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74 views

SFP + Gmail = Emails delivered to spam box

A long time ago I posted a question here: Postfix: Gmail marking my email as spam where I said that although emails send from my servers were passing all the DKIM and SPF tests they were getting ...
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167 views

SMTP error : Remote host said: 550 5.7.1 At least one FROM header address not allowed to send mail from IP ADDRESS

We are developing an email sending app, and we allow our users to specify the From: header their emails will be sent from. Let's say our domain is mydomain.com and our client domain is ...
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86 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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26 views

Difficulty with second domain in an SPF Record (not allowed use email addy)

I'm kinda out of my element here so please forgive me. I have read and googled several spf post and troubleshooting tips but I can't quite figure out what I'm missing. My test email is failing ...
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19 views

SPF record getting soft failed due to dynamic ip

The SPF soft fail error I'm getting is: Received-SPF: softfail (google.com: domain of transitioning noreply@example.com does not designate 64.202.189.129 as permitted sender) ...
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362 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 ...
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0answers
903 views

553-Message filtered - HELO Name issue?

I am having major issues sending from my SBS2011 machine to Message labs server-13.tower-134.messagelabs.com #553-Message filtered. Refer to the Troubleshooting page at ...
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0answers
478 views

SPF Check Failing Because Yahoo and Hotmail Looking for Zone File For Hostname

I have set up an SPF record that passes gmail's SPF record check, but not hotmail, yahoo, port25.com, isnotspam.com, or openspf.net. I believe the SPF record is properly set up for my domain, ...
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0answers
338 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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subdomains and SPF failures

I have recently moved some of my e-mail services to sub-domains (sub1.company.com, sub2.company.com) because the SPF of the main domain - company.com got full (lot's of includes and there is more ...