All Questions
116
questions
0
votes
0
answers
21
views
Should smtp_helo_name always be the same as your MX record?
I can't seem to satisfy HELO checks on SPF records in all cases. I have an SPF record for my domain like this:
"v=spf1 mx -all"
The MX records in the zone are:
mx0.mydomain.org.uk. ...
- 507
0
votes
0
answers
70
views
What are these DMARC failures about?
I've been toying with dmarc off and on for the last couple of months. Currently I have no policy set. I am using URIReports for report collection and analysis. Most of the results are good. We use ...
- 103
1
vote
2
answers
420
views
Email message headers pass SPF check after failing earlier SPF checks. Will this result in spam?
I have an issue where email is being marked as spam by Gmail/Google Apps systems.
When reading the mail headers, the most recent SPF check in the mail chain passes, but earlier checks fail. That is, ...
- 181
0
votes
2
answers
582
views
Spammers slipping through SPF
One of the subscribers on the mailhost I run has been receiving scads of spam mail "from himself." With SPF set up and validated on the domain (wickenburg.us) this should not be happening. ...
0
votes
1
answer
108
views
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 ...
- 9
0
votes
1
answer
865
views
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 ...
- 1,305
2
votes
1
answer
4k
views
DMARC record is valid, but your domain's None/Quarantine policy does not yet protect it against email spoofing and phishing
People,
Using the website: https://easydmarc.com/tools/dmarc-lookup?domain=name.com
I got this error:
DMARC record is valid, but your domain's None/Quarantine policy does
not yet protect it against ...
- 1,305
7
votes
2
answers
1k
views
How can I create and update the existing SPF record to allow more than 10 entries?
How can I include another SPF record if my existing domain already has 10 lines of SPF records in the TXT record?
I wanted to add these two:
include:mailgun.org
include:sendgrid.net
This is my ...
- 1,305
1
vote
1
answer
195
views
Confused about SPF Records
I thought that ?all in SPF should not be used.
Then I examinated SPF records of some local email provider companies and I found this:
v=spf1 mx ip4:77.75.78.0/23 ip4:77.75.76.0/23 ip6:2a02:598::/32 ?...
- 11
0
votes
0
answers
1k
views
DMARC, DKIM, or SPF? Emails going into quarantine
I have never had to deal with DKIM, DMARC, or SPF records before; however, our SPF record is full (10, Cloudflare) and I have a vendor whose emails aren’t making it to our mailboxes.
I made ...
- 1
0
votes
1
answer
370
views
How to stop spammer spoofing my domain for emails
I've scanned all my code and even changed the passwords to my google apps account such that the SMTP password has changed. However, spammers are still sending emails from June24-eBay-USA-contactmsg-...
- 302
25
votes
5
answers
8k
views
Does DKIM alone not solve the spam issue? Why do I need SPF?
FINAL EDIT : I was completely wrong about DKIM it seems, the signing domain does not have to be the same as the sender domain, thus the whole premise for my question is flawed. A lot of thanks to Paul ...
- 521
0
votes
0
answers
2k
views
Allowing Messages from IP Address DMARC
I'm still learning infrastructure stuff and need to ask a question which relates to DMARC. A user in the organisation has an app which is sending marketing messages to staff within the business. The ...
- 615
1
vote
1
answer
3k
views
emails to Yahoo are ending up in SPAM folder despite spf=pass, dkim=pass and dmarc=pass
Are we possibility having a reputation problems with Yahoo emails?
Yahoo raw mail header finds my policy I published: dmarc=success(p=REJECT,sp=REJECT)
Emails to clients at Google and Outlook are not ...
- 274
1
vote
1
answer
929
views
Setting up SPF record for A2Hosting shared hosting
I'm trying to setup A2Hosting SPF correctly since the proposed SPF is landing the emails in the SPAM folder in Gmail.
This is the default SPF: v=spf1 +mx +a +ip4:210.125.99.77 ~all
But when ...
- 121
13
votes
2
answers
16k
views
How does DKIM work when sending emails from multiple sources/servers?
So if I'm understanding DKIM correctly, it basically is a public/private key type of service. However, how does this work if you send emails from multiple servers/sources? For instance, I have a ...
- 141
2
votes
0
answers
555
views
How to avoid gmail orange mark and spam filter when using cloudflare proxies?
I send emails from my site via php smtp method connected to 'smtp.gmail.com' on 465, and account added to GSuite. All my emails falls in spam folder in Gmail. The kind of emails is just password ...
- 21
3
votes
2
answers
2k
views
SPAM Domain Spoofing through SES
A spammer seems to be running spam through SES and spoofing our domain.
We are using SPF and DKIM so I’m not sure what is going on.
This is our SPF record:
v=spf1 a mx include:amazonses.com include:...
- 131
0
votes
0
answers
222
views
Are email services looking at the "From address" along with the envelope sender when doing SPF lookups?
First, I understand the caveats and flaws of SPF as an aging authentication technology, and understand that it should be used in conjunction with DKIM and DMARC and is not a panacea for deliverability....
0
votes
0
answers
36
views
DKIM and SPF for Different Server [duplicate]
My situation like the following:
Web server hosted in Google Cloud with domain name lets say: example.com
Mail server hosted in Linode (lets say in server name: server.myserver.com) using cPanel with ...
- 1
6
votes
2
answers
1k
views
Postfix: ACCEPT if RBL and SPF checks pass, DUNNO/greylist otherwise. How to do it?
I would like to accept all clients that pass RBL and SPF checks (and possibly some checks, but these are minimum requirements for me), and greylist those who don't. When a client passes the SPF check (...
- 61
2
votes
2
answers
8k
views
How to read this DMARC report? Why does Yahoo still reject mails from my server?
I've got hMailServer set up on my server, which bulks-mails a newsletter to an opt-in subscriber base. I have set up DKIM signing, a SPF record explicitly giving my server permission to send email on ...
- 273
0
votes
0
answers
325
views
Mail issues only with Google App domains
I have a local mail server set up. It is connected via a dedicated IP (with an appropriate PTR record). I have DKIM, DMARC, and SPF set up.
My domain has been added to Google's Postmaster Tools and ...
- 153
1
vote
2
answers
319
views
Is this correct for a SPF record based on our setup?
Our company has a SMTP server that sends mail out on behalf of our customers. So a customer would log into our system, go to a specific section, and can fill out a form to send an Email to whoever ...
- 209
0
votes
1
answer
567
views
Combine 2 spf records into 1
I have 2 spf records for my email example.com
The first one is from my hosting provider. I DO send and receive email through my hosting provider. Emails from here do not go to spam.
"v=spf1 ?include:...
- 115
1
vote
1
answer
743
views
Spoofing/Spam received from GSuite alias accounts
The company currently have 2 domains registered: "dom1.com" and "dom1.com.ex". "dom1.com" is hosted and is the main domain associated on our GSuite account to create user accounts to send mails, "dom1....
- 13
4
votes
1
answer
124
views
Once SPF is correctly setup is it normal for spoofed email to go to spam folder or should Gmail deleted them?
In the spam folder of Gmail can be found illegitimate spam emails apparently sent from my own domain email address but from an origin not allowed by SPF. The domain is on G Suite emails. SPF is ...
1
vote
0
answers
264
views
Outbound Emails flagged as Spam from Wordpress but not Gmail(DKIM SPF issues)
I recently setup wordpress and pointed my domain to it. With that, we setup gsuite to handle email. We have the domain at godaddy and the server space on a VPS instance. I have added the MX records ...
- 141
0
votes
2
answers
1k
views
Can a DMARC "reject" policy prevent NDR backscatter?
Our email is being spoofed. We already have SPF/DKIM/DMARC p="quarantine" policies in place however we are still receiving thousands of Non-Delivery Receipt (NDR) in our inbox.
Will changing to DMARC ...
- 521
6
votes
2
answers
2k
views
Postfix: How to accept email with valid SPF but unresolvable hostname?
I have configured my Postfix to reject email sent from hosts without PTR record and hostnames that don't have A record. I found there are legitimate mail servers with valid SPF records which don't ...
- 1,035
-1
votes
2
answers
58
views
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 ...
- 109
0
votes
1
answer
356
views
Outgoing email marked as spam. Can you tell what is wrong from email header?
I have a send-only server using postfix. The outgoing email goes to Yahoo's spam folder. It is a test email, the content is very short. I attach the header below. The SPF, DKIM all looks good. Can you ...
- 1
4
votes
1
answer
517
views
Two servers, same email sent from both, Gmail sees only one as spam
I've been working on this problem for years with no success (I gave up a while back and just hoped Gmail would eventually "learn" that messages from one of my servers wasn't spam, but that apparently ...
- 183
0
votes
1
answer
2k
views
How to configure SPF to pass local IP address?
I have a database CentOS 7 server connected to an application CentOS 7 server via a cross connect cable. The mail server resides in the application server, with the following SPF configuration:
v=...
- 176
1
vote
1
answer
443
views
Microsoft's SPF determination is different from Google's
I have an application sending mails from GoDaddy's smtp server. I set the SPF of the From domain to (the normal human emails use Office 365):
v=spf1 include:spf.protection.outlook.com include:smtp....
- 407
5
votes
1
answer
14k
views
Improve Spam Confidence Level (SCL) for outgoing emails
I have a postfix SMTP server on Ubuntu. I have valid SPF and DKIM records, as verified by the email header my customer received.
Authentication-Results: spf=pass (sender IP is XXX.XXX.XXX.XXX)
...
- 1,041
0
votes
2
answers
43
views
Can DMARC apply to email already received?
We have a domain that has been "ruined" by spammers, using it's reputation for sending spam mails.
We're moving to a different domain and would like the previous domain to become a "death trap"; ...
- 356
0
votes
1
answer
565
views
Email from website form submission not being deliverd due to SPF fail
I need a little guidance on a spam related email rejection our website is having. It is a Wordpress site hosted with WPengine. As far as I'm aware it's using the default PHP mailer.
I've ...
- 783
1
vote
1
answer
981
views
How to block/blacklist a spam server via SPF record
I have an SPF record:
v=spf1 include:_spf.google.com ip4:70.xx.xx.xx -all
I had the default from Google of
v=spf1 include:_spf.google.com ~all
I've been moving away from this default in an effort ...
- 463
2
votes
1
answer
805
views
SPAM because of a unsuccesful SPF validation
I have a public mail server (Linux + postfix) and some clients using it. The server is properly configured, included DKIM and SPF validation. But emails from only a few of my clients are being marked ...
- 499
0
votes
1
answer
1k
views
SPF check MIME FROM - how does the header differ and do I want to enable it?
On our email gateway SPF checks are enabled. There is an option though called SPF Check MIME FROM that I am unfamiliar with and what exactly it will do if the box is checked (enabled). I have ...
- 649
4
votes
3
answers
5k
views
mails fom my mailserver go to spam folder of hotmail.com [duplicate]
I set up a mail server with dovecot/postfix on a debian server.
I don't send commercial mail or newsletters. We are only 4 users and nobody send SPAM. We only send classical mails (no large pictures ...
- 41
-2
votes
4
answers
756
views
SPF, CloudFlare, Google Apps - Email sent through Contact Form marked as spam
One of the main reasons of putting your server behind CloudFlare is to hide your server's IP address so an attacker can't DDoS your IP and render CloudFlare obsolete. By putting your server behind ...
- 169
-2
votes
1
answer
134
views
My Email Strightly goes to gmail spam/just folder ( DKIM,SPF,DMARC is okay ) [duplicate]
( it's not duplicate , its related to rDNS , please don't flag it as duplicate or give me the link of related one )
i have a problem, my emails from my mydomain.com straightly goes to spam folder in ...
44
votes
7
answers
3k
views
Is it becoming impossible to be a small mail provider?
I operate a small mail server for my private emails, some friends who have websites and two NGOs. In total my server sends between 60 and 400 messages a day. Now a lot of these emails are personal ...
- 742
-1
votes
1
answer
72
views
Why does Google junk mails from my server? [duplicate]
I have a send-only mail server setup on an Ubuntu VPS. The mail server is only used to send out registration e-mails from a web application. I have the following configured:
DomainKeys Identified ...
- 902
0
votes
1
answer
911
views
SPF in hotmail are not used [duplicate]
I have a problem with Hotmail provider, all mail sent from my server goes to SPAM folder. I Have added a correct SPF to my domain example.com but into the headers is not used (spf=none) and the token ...
3
votes
1
answer
270
views
SPF "include:" does MX stay as included domain's MX, or get translated to the includer's MX?
SPF records allow you to include another's domains SPF record within your own. For example, example.com can have include:_spf.google.com in its SPF record to include all of the SPF rules for _spf....
- 151
-1
votes
1
answer
492
views
Add a second IP to SPF record, from an external SMTP server [closed]
I would like to add the IP of an external SMTP server to an existing SPF record, which is looks like this:
"v=spf1 a mx ip4:185.6.139.6 a:frey.mailpool.1.netmask.hu a:frey.mailpool.2.netmask.hu a:...
0
votes
1
answer
2k
views
DKIM, SPF, DMARC, SPF OK mails are flagged as SPAM
I have a dedicated server running CentOS7 with Postfix, the problem is that all the sent mails are flagged as SPAM by hotmail and gmail despite DKIM, SPF, DomainKeys, DMARC records and keys wich are ...
