Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [domainkeys]

44 questions
1
vote
1 answer

What are the right reverse PTR, domain keys, and SPF settings for two domains running the same application?

I just read Jeff Atwood's recent post on DNS configuration for email and decided to give it a go on my application. I have a web-app that runs on one server under two different IPs and domain names, on both HTTP and HTTPS for each:
James A. Rosen
  • 511
  • 3
  • 9
  • 19
1
vote
1 answer

Emails not adding DKIM signature: Milter service - Connection refused

I have generated and added a DKIM record with a selector: 2020. The DKIM record seems to have been added successfully when I used a few DKIM checkers online but GMAIL (mailed-by is displayed whereas signed-by isn't when I check the info of the email…
AndrewL64
  • 179
  • 18
0
votes
1 answer

What would cause intermittent DomainKey-Status: failures?

Every week, we send something like a small newsletter. Sometimes, the header in the newsletter says DomainKey-Status: bad (test mode) Sometimes it says DomainKey-Status: good (test mode) All the other headers in the email are the same (besides…
wherestheph
  • 233
  • 3
  • 5
0
votes
1 answer

Is it as dangerous to modify DKIM domain's public key, as to get a domains' sending private keys?

I've been reading about DKIM and one of the reasons it cannot be "hacked" is because an attacker doesn't have access to a server's DKIM private key. But what if the attacker has access to the domain's DNS records? What stops them from generating…
daremkd
  • 159
  • 4
0
votes
1 answer

DKIM key length causing failed validation?

I setup a DKIM record where I had to break up the value because it exceeded the 255 character length limitation. But now I see that online checkers are complaining about the p= not being base64 encoded. Such as this site -…
user53029
  • 629
  • 3
  • 14
  • 36
0
votes
1 answer

Difference between DKIM and DomainKeys

There are two methods for signing mail out there (DKIM and DomainKeys). While some sources say that DomainKeys are "ancient", others say you need both, even though to my understanding they do almost the same. Do I need both methods applied to our…
Flatron
  • 318
  • 2
  • 5
  • 19
0
votes
1 answer

SPF, DKIM, DMARC, DomainKeys OK, emails flagged as SPAM

I have a new dedicated server running CentOS7 with Plesk 12.5 with postfix, and i have succesfully set SPF, DKIM, DMARC and DomainKeys as it shows this test from port25.com: ========================================================== Summary of…
pdsolutions1
  • 1
0
votes
2 answers

DomainKeys options for multiple mailers

I want to setup Domain Key signatures for outbound mailers (postfix). I am currently using dkimproxy but I would need to setup one instance per postfix which is too many. Is there software that will sign for all the mail servers on one box? What are…
Brian G
  • 375
  • 2
  • 5
  • 19
0
votes
2 answers

Getting started with DKIM / DomainKeys

I'm using WinServer to generate and send emails via my Goggle Apps-hosted domain (my SMTP server is smtp.gmail.com) . My registrar (Network Solutions) supports Text records - so I should be able to sign outgoing mail. Where do I go to generate those…
justSteve
  • 859
  • 1
  • 7
  • 19
0
votes
2 answers

Gmail uses both DKIM and DomainKeys, while Hotmail uses none?

I noticed that Gmail messages have both a DKIM-Signature header and a DomainKey-Signature header, while Hotmail messages have none. What is the purpose of using both DKIM and DomainKey signatures, as Gmail does? Is it fairly safe/compliant to use…
ezequiel-garzon
  • 577
  • 2
  • 7
  • 16
0
votes
2 answers

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: none (mta1133.mail.mud.yahoo.com: domain of …
modulaaron
  • 257
  • 1
  • 4
  • 11
0
votes
0 answers

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
  • 1
  • 2
-1
votes
1 answer

Confused with Domainkeys. Help?

I generated a domain key for my domain at http://www.socketlabs.com/services/dkwiz and got the following two things generated. Generator Key1: Setting up Hurricane Server Edit the configuration for the account you wish to add DomainKeys/Dkim to,…
Karthik Malla
  • 111
  • 5
-1
votes
1 answer

qmail is returning all mails as "handlers permanentfail"

i am sending emails through php and qmail with SPF record and domainkeys on. but all emails are returned as handlers permanentfail. what is the problem?
daniel
  • 1
  • 1
1 2
3