DomainKeys Identified Mail is a scheme for signing and verifying email messages to confirm that that the source hasn't been forged, and is typically implemented by MTAs. The source MTA adds a header to the message body containing a signature, and the destination MTA verifies this signature against a ...

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48 views

message headers say dkim = fail, stats say = PASSED. why the conflict, and how to fix?

In some-not-all received emails -- notably ONLY those sent via 'bulk' services -- I get a DKIM fail: "signature verification failed". Here's one example: Received message headers DKIM-Filter: ...
0
votes
0answers
42 views

DKIM - OpenSSL error: data too large for key size

I have installed openDKIM on a CentOS server running Exim as my MTA. I have gone through the configuration and tested the keys and eveything seems fine. I have created the public and private keys, ...
-1
votes
0answers
37 views

GoDaddy DKIM public key

Sending an email from user@mydomain.com to unlocktheinbox.com/mail-tester/ address I can see that the messages sent through GoDaddy email server are signed with DKIM. On GoDaddy cPanel or KB there is ...
1
vote
3answers
100 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 ...
1
vote
2answers
93 views

Allowing a partially trusted server to send mail for one given address via SPF / DKIM

I run a web service that should be able to send out e-mails using a company address, e.g. foo@company.com. I do not, however, want to give this service access to the mail server of company.com (for ...
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votes
2answers
25 views

DKIM to gmail failing

I'm trying to get DKIM setup on a CentOS 7 server running exim but gmail is returning dkim=neutral (bad format) header.i=@ellie-oli.com; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/...
0
votes
1answer
24 views

DKIM with same key but different domains

We are planning to sign with DKIM emails for multiple domains. Each domain will have a CNAME to a DNS entry in a common domain where the keys are stored. If every domain sign with the same key, but ...
0
votes
1answer
48 views

Debugging dkim=fail using sendmail+dkim-milter

I'm setting up a CentOS server with the sendmail MTA to send DKIM-signed mail (sending domain is @brighter.do). I have succeeded in routing mails through the dkim milter; however, they arrive at my ...
1
vote
0answers
31 views

Exchange mailbox forwarding - emails fail dkim body hash

Exchange is modifying emails before forwarding them out to an external Google Apps account. I'm hoping to find a way to fix this. Here's some more detail: Using Exchange 2010 SP3 Version 14.3.123.4 ...
1
vote
2answers
68 views

Exim4 does not add DKIM signature

Have spent 2 days trying to tell Exim to add DKIM signatures on my Debian8 server. No success. Have read many how-tos, forums but none of possible solutions wotk on my server. Have generated the keys:...
0
votes
1answer
20 views

Sending email from Google, Amazon and own mailserver from same domain with DKIM

I have a domain (example.org) for a organization, and we send different types of e-mail: I send email (From: user1@example.org), using my local email-server An other user (From: user2@example.org) ...
2
votes
2answers
369 views

Only enable SRS when forwarding to enable DMARC

I am setting up a mail server on my VPS and in order to prevent spam and being marked as spam I have enabled SPF, DKIM and DMARC. However, I do not want to host my own mailbox, so I forward the ...
6
votes
2answers
2k views

SPF vs. DKIM - The exact use cases and differences

I'm sorry for the vague title. I don't fully understand why SPF and DKIM should be used together. First: SPF can pass where it should fail if the sender or DNS is "spoofed" and it can fail where it ...
1
vote
4answers
4k views

OpenDKIM Filter: Unable to create listening socket

hi i keep getting this error in maillog.any ideas Jul 22 10:16:52 veepiz opendkim[5145]: OpenDKIM Filter: Unable to bind to port inet:20209@localhost: Address already in use Jul 22 10:16:52 veepiz ...
0
votes
1answer
54 views

Two DKIM signatures in outgoing messages

I have DKIM and SPF correctly configured on my server with postfix myserver.com. However, when I send emails from Gmail configured to authenticate and send email as myname@myserver.com ...
33
votes
5answers
607 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 ...
0
votes
2answers
36 views

Service to test outgoing mail for SPF/DKIM/SRS validity?

We're setting up a redirection-based mail server with a lot of complex moving parts, including the standard ones that apply to everyone like SPF/TLS as well as the more complex ones needed to ensure ...
0
votes
0answers
7 views

exim4 dkim only signing emails from root

I have set up exim4 on my raspberry pi, and configured exim to sign emails with dkim. This works perfectly when an email is sent from "root@mydomain.com", but when I send an email from any user other ...
1
vote
1answer
95 views

What order to split TXT records get assembled in?

As per RFC4408 3.1.3, a TXT record can be split up with quotation marks and will be reassembled properly - this is a way of getting around the 255 character limit on record size. IN TXT "v=spf1 .... ...
0
votes
1answer
20 views

Dangling CNAME Record Issue

I have been trying to setup the DKIM CNAME Signing for one of my sub domains with Amazon SES and for some reason the CNAME is behaving oddly: Eg. The following: dig @4.2.2.4 ...
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votes
1answer
34 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 ...
0
votes
1answer
22 views

Local mail not signed, Postfix, DKIM, Mandrill

I am running a Postfix mail server for my client. Mail is relayed through Mandrill. Mandrill requires a valid DKIM signature. This works all right for relayed mail. That is, mail sent through ...
1
vote
1answer
125 views

Number of issues with postfix, DKIM, and mail getting rejected or bulked

I'm having a number of issues with Postfix and mail sent being rejected or put in the spam/junk folder. I am trying to send emails on behalf of a number of my customers. I've got a postfix server set ...
0
votes
1answer
65 views

Using DKIM in my server for multiple domains (websites)

As I couldn't find this exact tutorial in Stack, I share my findings with al of you. I always get things solved thanks to this comunity. Thanks! Original question: I've read the tutorial posted by ...
1
vote
0answers
43 views

Unable to query DKIM because of DNS timeout

I run dkimproxy to sign outbound email and verify inbound email. Since a while, I am experiencing the following permanent problem. The dkimproxy service is unable to query the DNS. Each and every ...
0
votes
0answers
15 views

Postfix mail always in spam [duplicate]

I've installed and configured postfix trying to find the best way on the web. This is postfix main.cf: smtpd_tls_security_level = may smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout =...
0
votes
1answer
1k views

named.conf to include zone file and opendkim conf

I would like to separate out opendkim default.txt from zone file and to be include in named.conf instead. I'm a little bit confused on which approach I should use and which is the correct one. ...
1
vote
2answers
45 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 ...
2
votes
1answer
460 views

Hotmail/Outlook.com DKIM failure when signing with different domain - header.d ignored

We (sender.org) provide a mail server for a client (example.org) and sign outgoing messages with our private DKIM key (we cannot change the signing domain to the client's domain). Return-Path: ...
0
votes
0answers
92 views

dkim=temperror at hotmail and dkim=pass at gmail

When i send emails to hotmail, i get dkim=temperror. However, my dkim records are good as checked by gmail. At hotmail, i get also spf=pass, X-AUTH-Result: PASS, X-SID-Result: PASS 7 days ago, i ...
-1
votes
1answer
102 views

How to create txt record

I'm trying to add a secondary dns to my dedicated ovh server. From the control panel, it says that i need to create first a txt dns record with value xxxxx and subdomain ownercheck and then continue ...
-1
votes
1answer
47 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 ...
0
votes
1answer
66 views

DKIM signature and hmailserver - Your DKIM signature is not valid

I'm trying to get DKIM working on a domain using hmailserver as the mailserver, but I keep on getting Your DKIM signature is not valid This is from www.mail-tester.com The DKIM signature of your ...
0
votes
1answer
52 views

Does DMARC send alerts even upon successful delivery?

I keep getting DMARC reports that show that my IP passed all SPF and DKIM checks. Is this just an email to say that everything's fine or is it an indication of a problem? If the latter, there's ...
1
vote
2answers
174 views

would this header cause the email to be flagged as suspect?

Authentication-Results: [snip].mail.[snip].[snip].com from=someDomain.com; domainkeys=neutral (no sig); from=someDomain.com; dkim=neutral (no sig) Received: from 127.0.0.1 (EHLO smtp1....
2
votes
2answers
220 views

Postfix header stating wrong IP

I am using Postfix 2.11.3 on Debian 8.0 I configured Postfix to run multiple instances (3), one for each public IP connected to our server in order to balance outgoing traffic depending on the ...
0
votes
0answers
140 views

How to send DKIM signed email with PHP Mail

I'm using Cacti and the PHP mail option. I want to sign my emails with DKIM I have setup rsa key, signatures, and keytable with opendkim. Opendkim conf which I added to is below taken from a tutorial. ...
2
votes
1answer
71 views

Exchange Online, Mandrill, SPF and DKIM

I have a customer ABC Ltd (abc.ie) who has a requirement to send emails via SMTP to their own customer base from within an application that we have developed for them. For their company email they ...
1
vote
1answer
20 views

OpenDKIM and canonicalization of quotes

In the long-running battle against a considerable percentage of the DKIM failures for the signatures generated on my servers, I've noted an interesting occurence. Today I've got this DKIM failure ...
3
votes
2answers
236 views

Receiving DMARC reports for emails I do not send

I am hosting the email for my domain (lets call it example.com) on google apps (free legacy edition). I recently enabled the DMARC reports so I now get a daily report for the emails sent from my ...
0
votes
2answers
273 views

Yahoo mail authentication dkim=permerror (bad sig) [closed]

When I send emails to any yahoo account the authentication result shows the following: YAHOO RESULT: Received-SPF: pass (domain of anildagia.com designates 66.225.220.59 as permitted sender) ...
0
votes
0answers
11 views

Yahoo marked my mail as spam [duplicate]

Yahoo is marking our mail as spam. Mail header says that Domain Key, PTR, SPF all ok. From Abrabos Mon Jan 18 23:41:38 2016 X-Apparently-To: carry.vaillant@yahoo.com; Mon, 18 Jan 2016 23:45:10 +0000 ...
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votes
1answer
39 views

DKIM - DomainKey Identified Mail public key longer than 512 character [closed]

I've generated private key and public key using following commands. openssl genrsa -des3 -out server.key openssl rsa -in server.key -out server.key.insecure mv server.key server.key.secure mv server....
0
votes
1answer
112 views

SPF + DKIM + DMARC with Gmail account and external mail server

I,m using gmail with own domain (Google Apps) for my project. Now I want to add external mail server for sending notifications for users. Gmail doesn't give private keys for DKIM and if keys will be ...
11
votes
3answers
7k views

Find DKIM and DMARC Records?

Is there a method to find a domain's DKIM and DMARC records using dig or nslookup? I have attempted to do the following: dig somedomain.org any returns many records, but not the known DKIM and ...
3
votes
2answers
528 views

Mail with DKIM Signature gets T_DKIM_INVALID flag by SpamAssassin

I've installed a Debian (jessie) box with postfix and spamassassin. Configured and everything works fine. Except receiving mails with DKIM signatur will produce a flag T_DKIM_INVALID even if the ...
1
vote
1answer
68 views

Sign DKIM on relay mail server

I found some email have header: Received: by 10.112.172.99 with SMTP id bb3csp690725lbc; Fri, 8 Jan 2016 11:37:33 -0800 (PST) X-Received: by 10.55.15.139 with SMTP id 11mr615164qkp.50....
1
vote
0answers
32 views

How do I use SRS rewrite the From header on a forwarded email message

I have a serious problem here. I run a labor dispatch website, where users can register their cell phones (I send them an auth code via text, they enter it at the website, it's entirely opt-in). A job ...
4
votes
1answer
3k views

DKIM body hash fail

We're sending out e-mails with EXIM 4.71 from a PHP application. DKIM is enabled and is working properly, unless when sending a specific type of mails, which results in dkim=neutral (body hash did not ...
1
vote
0answers
88 views

Sendmail refuses to sign messages with DKIM provided by opendkim

I have sendmail and opendkim installed on ubuntu 14.04 and would like to configure DKIM. Unfortunately sendmail refuses to sign outgoing emails with DKIM. Despite the fact that it already did before,...