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.
31
votes
5answers
3k views
Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?
This is a Canonical Question about Fighting Spam.
Also related: How to stop people from using my domain to send spam?
There are so many techniques and so much to know about fighting SPAM. ...
15
votes
4answers
1k views
Best Practices for preventing you from looking like a spammer
I'd like to feel more confident setting up mail for my clients with regards to false positives. Here's what I know:
SPF records are good, but not every spam filter service/software (SFSS) uses ...
5
votes
5answers
10k views
How do I configure SPF for multiple domains on a server? (also allowing gmail as a sender)
SPF (Sender Policy Framework) seems like a good way to combat spammers/spoofing.
However, despite reading the explanations several times, I'm not quite understanding how to configure it correctly.
...
8
votes
4answers
570 views
SPF - should I implement?
A request has been made by a web developer for our domain DNS records to include SPF TXT records. I found differing opinions on this out there...
Any comments or insights you can offer will be highly ...
9
votes
3answers
3k views
Do SPF Records For Primary Domain apply to subdomains?
I have a quick question regarding SPF records: Do they need to be present for all subdomains?
Lets say that I have a TXT record with SPF info for domain.com
Let's also say that I have a seperate ...
1
vote
3answers
1k views
How to set SPF record?
I have configured postfix to use mail.example.com
I have many virtual domains, like:
domain1.com
domain2.com
domain3.com
My question is, how to set the SPF? Do I have to set SPF for each domain ...
1
vote
3answers
987 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: ...
0
votes
0answers
85 views
Two hostnames routing through same mail server. Gmail flags one as spam and not the other [closed]
I have two websites set up on a single server. I send and receive mail using two different domain names, but the second domain routes email through the first's mail server.
I send a mail from the ...
4
votes
1answer
949 views
Is using SOFTFAIL over FAIL in the SPF record considered best practice?
Or put another way, is using v=spf1 a mx ~all recommended over using v=spf1 a mx -all? The RFC does not appear to make any recommendations. My preference has always been to use FAIL, which causes ...
4
votes
5answers
3k views
Email sent from server with rDNS & SPF being blocked by Hotmail
I have been unable to send email to users on hotmail or other Microsoft email servers for some time. Its been a major headache trying to find out why and how to fix the issue.
The emails being sent ...
1
vote
3answers
973 views
SPF include: too many IP addresses
I've hit a snag with SPF. The SPF record for my domain will contain four or five entries, plus it will contain:
include:sgizmo.com
The SPF record for sgizmo.com contains eleven entries! This, plus ...
0
votes
2answers
2k views
Yahoo flagging mail as spam when using relay server
I'm using Postfix to relay mail from my site to my mail server. Mail is received properly at my Gmail and Hotmail accounts - only Yahoo is the problem. The Yahoo mail headers state:
Received-SPF: ...
6
votes
1answer
253 views
Should SPF records provided by ISPs contain “all” at the end?
This seems obvious or something I just don't understand.
I want to build SPF records for my clients. Most of the email providers provide an SPF record that I can "include" in mine, but they all ...
2
votes
3answers
122 views
CNAME domain to another domain, but keep different SPF records for the two?
SCENARIO:
mydomain.com is the main website, we do send/receive mail using
address@mydomain.com. mydomain.com DNS has got an SPF record "v=spf1 a mx ~all"
mydomain.net is just an alias for ...
2
votes
1answer
972 views
Forward Mails to Gmail
I have a postfix mailserver running. Mails sent from users to Gmail are showing up in Gmail, so it works in general. Same for all other freemail hosts I know.
The problem is that some users have no ...
1
vote
2answers
577 views
What should be the spf record for my domain?
I have my own registered domain.
I have a dedicated IP for my domain.
I use a shared hosting service for my website.
I want to send mail with php's function mail();. I have created one email ...
0
votes
1answer
1k views
SPF Records - mechanism not recognized by this client. unknown mechanisms:
Having a bit of a problem with my hosting company rackspace cloud and SFP records. I asked them to updated it on there DNS. This is what they set it as:
seonky.com. 300 IN TXT "v=spf1 ip4:ubuntu ...
0
votes
1answer
94 views
SFP record setup for single server
I have a single server
Domain: mycompany.com
Server: mail.mycompany.com
MX: mail.mycompany.com
Would this record work
"v=spf1 ip4:38.28.xx.yy
a:mail.mycompany.com
mx:mail.mycompany.com ~all"
...
0
votes
1answer
245 views
550 error emailing on behalf of clients using spf
In response to the answers to this question I tried to set up the correct 'from', 'sender' and 'return-path'. I am not sure how this is set up in .net (particularly 'return-path'), but I have set the ...
-1
votes
1answer
136 views
spf record entry
I have two DNS zone files can anyone please tell me in which one I have to add an SPF record?
Zone (localhost.zone):
$TTL 86400
@ IN SOA @ root (
...
-1
votes
3answers
3k 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 ...
