All Questions
Tagged with spf reverse-dns
18
questions
0
votes
1
answer
662
views
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 ...
- 101
1
vote
1
answer
540
views
email validation: is there any point doing both SPF *and* reverse DNS tests?
For a receiving MTA, it seems to be unnecessary to check both the SPF record for an incoming SMTP connection, and to do an rDNS/PTR lookup.
Consider:
Server gets SMTP connection from aaa.bbb.ccc.ddd, ...
- 223
1
vote
1
answer
1k
views
SPF and IPv6 fails even if the reverse DNS is created
When sending mails to Gmail I get this error
Received-SPF: fail (google.com: domain of [email protected] does not
designate 2a01:4f8:xxx::2 as permitted sender)
client-ip=2a01:4f8:xxx::2;
When I ...
- 2,055
3
votes
1
answer
1k
views
Postfix setup with different domain name, reverse lookup and SPF
I would like to set up Postfix properly to serve multiple virtual domains while complying to all standards and being able to enable security measures like SPF.
The server has the hostname server....
- 131
0
votes
2
answers
1k
views
where (and how!) to add spf record for www subdomain
This is a followup to question: Some advise needed on how to setup reverse PTR on web and mail server
So i've decided to use my www subdomain for both www and mail. My current problem is not knowing ...
- 129
0
votes
2
answers
598
views
DNS record check requested (spf, dkim, dmarc)
Is below correctly setup? I have 1 A record mydomain.com pointing to an ip address. I have a subdomain called www.mydomain.com that also has the PTR record for the ip address (because i'm also going ...
- 129
2
votes
2
answers
2k
views
Multiple mail servers and reverse DNS
If I have three mail servers MS1, MS2 and MS3 all with different IPs but share the same domain name (exampledomain.com) and I use an SPF record to specify them, how would reverse DNS work on the ...
- 43
-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 ...
1
vote
0
answers
125
views
FCrDNS for a mail server that also runs other services (http, ftp etc)
I am learning how to administer productive internet-facing machines and services, and towards that end setting up mail, web, and a couple other services, all on the same box (budget constraints and ...
- 111
5
votes
2
answers
16k
views
Do I need to Set-up PTR record in SPF Setting?
I have set-up the RDNS from my hosting provider for the ip address to resolve to "maximus.example.com". After that, do I also need to add the PTR records to the SPF Text details in my DNS zone file as ...
- 1,481
0
votes
1
answer
295
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 ...
- 11
0
votes
1
answer
781
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 ...
1
vote
3
answers
10k
views
Hotmail wants me to modify my SPF record
This is my current SPF record. It works well with gmail and yahoo but hotmail was ignoring. So i used their submit system and now they replied me with the text below.
This is my current spf
v=spf1 a ...
- 576
3
votes
3
answers
3k
views
hotmail blacklist and rDNS questions
My company has recently purchased a VPS for email and webhosting. I am not an expert on email authentication but here is my story.
After the VPS was purchased we started receiving bouncebacks with ...
- 31
6
votes
3
answers
9k
views
SMTP host name vs. domain in "From:" address vis-a-vis Email Deliverability
I'm trying to implement (or make sure that I'm correctly following) email sending best practices to improve deliverability, but the role of the smtp server's host name vs the domain name of the From: ...
- 61
-1
votes
3
answers
6k
views
550 Requested action not taken: mailbox unavailable
I setup a small box with Server 2003 64bit to be used as a webserver and email server for a small school. Real simple stuff for a few users. A simple website and a handful of emails. rDNS and spf ...
- 680
0
votes
2
answers
2k
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 ...
- 435
21
votes
3
answers
24k
views
Will adding a second SPF record mess up my DNS?
Will adding a second SPF record mess up my DNS, or will it be like adding an extra nameserver?
(i.e. it only helps, not hurts)
- 1,045