550 errors from yahoo

Cloud9

Well-Known Member
Sep 17, 2012
46
0
6
UK
cPanel Access Level
Root Administrator
Yahoo are sporadically bouncing mail being sent to me from yahoo accounts

this is the bounce back

Code:
From: [email protected]
Date: 3 January 2014 21:44:19 GMT
To: [email protected]
Subject: Failure Notice

Sorry, we were unable to deliver your message to the following address.

<[email protected]>:
Remote host said: 550 signature_incorrect [BODY]

--- Below this line is a copy of the message.

Received: from [212.82.98.56] by nm17.bullet.mail.ir2.yahoo.com with NNFMP; 03 Jan 2014 21:44:18 -0000
Received: from [46.228.39.95] by tm9.bullet.mail.ir2.yahoo.com with NNFMP; 03 Jan 2014 21:44:18 -0000
Received: from [127.0.0.1] by smtp132.mail.ir2.yahoo.com with NNFMP; 03 Jan 2014 21:44:18 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1388785458; bh=mCn8Ows1QJdGCi6Q3z5SGBUiVkTB7/6NwZcbYS5YiE0=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:Content-Type:Content-Transfer-Encoding:Subject:From:Message-Idate:To:Mime-Version:X-Mailer; b=pwSYwJBYbt/MyHRIHNgwK9WBlOFJAce2j3SSNiwZ0+9Aw0AdBj4EKlVvTyaSW5zFBfR8TUzq+J9XJWL/ymfYJIDSA9dqyp0j2tKdK3Lx2VPlg2wBKH2E6IeLAglC//HXnpTaRm2pTUI1LSJfP5Z4WaDfam1YbcoyVbHynCHe+u0=
X-Yahoo-Newman-Id: [email protected]
X-Yahoo-Newman-Property: ymail-3
X-YMail-OSG: HGY09gQVM1l5pTysN0bBTm6IuuWSlvsHDLphtlfa4p_oOns
K_jdnruEM3ZexZjoetsODtDS7CU9AqICD6eeuy_lhua4n6IMvDfXuvLr1Pse
myC7VgUpZBcAbugVPg_zsdVvYuOmmQuDqJYdJ.GEy.T_zCJKoJH1iaxm24eS
ucg1zPZMNgnZMexVqUSuNF6GnYu4pBecDC3DVh_yiPSlG65wxkVfsUnP4rcm
T6xonJKb0aKxzDyun740uUzt0mktGqDdwBEyt1UMtPCe5VnMOxETKaOvbwRC
JpE__cCI1RIFzzZSS7xG4WU9r7ICSQL_75XIUiaLlkymkuOc8bgJTAMFlr.D
8.D0tmkz51u.ZGw9WJGWZhYihje4md3nYq2.heAbBCfH2oNO0ymSo1ZCrIpw
przOMlzPKhtcCVuqSJJSrAwizsAdsVg.8GI_nNVZD_5GkR3yhyftLUZ1yyus
SIZYBHWBtTMsd7VPi7bANKAcqYMauHuzfe0XTQ6ute1UCl2EsznbiJijqo5U
k6WZz858WfW_RhbSCGj05JTqEnwYLGV6I8VI-
X-Yahoo-SMTP: aqwYCvSswBAO_vjHa_WNB4eInTh2Mw--
X-Rocket-Received: from [10.129.182.225] ([email protected] with xymcookie [46.228.39.225])
by smtp132.mail.ir2.yahoo.com with SMTP; 03 Jan 2014 21:44:18 +0000 UTC
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Subject: Toilets!
From: Yahoo Person <[email protected]>
Message-Id: <[email protected]>
Date: Fri, 3 Jan 2014 21:35:04 +0000
To: "[email protected]" <[email protected]>
Mime-Version: 1.0 (1.0)
X-Mailer: iPhone Mail (11B554a)

Is this a yahoo problem or something at my server ?
 

Cloud9

Well-Known Member
Sep 17, 2012
46
0
6
UK
cPanel Access Level
Root Administrator
Still getting bounced mail 550 incorrect signature errors

But DKIM is now set up ok, but as above if i test it i get no skim sig returned ?

Do i need to restart any services (have restarted imap)
 

cPanelPeter

Technical Analyst III
Staff member
Sep 23, 2013
575
21
143
cPanel Access Level
Root Administrator
Twitter
Hello,

dkim signatures are entered at the DNS level, so you can dig for it, if you have shell access. Example might be:
Code:
# dig dkim._domainkey.YOURDOMAIN.TLD txt
Replace YOURDOMAIN.TLD with your domain name obviously. Also if you are using something other than dkim as the host, you would need to change that.
 

Cloud9

Well-Known Member
Sep 17, 2012
46
0
6
UK
cPanel Access Level
Root Administrator
Yes, dig is fine - i have dkim sigs and all is good with dig and if i run a dkim test like here DKIM Test - DKIM Verify - DKIM Validator

But Yahoo are still bouncing my emails as

Remote host said: 550 signature_incorrect [BODY]
- - - Updated - - -

Here is the dig

Code:
dig dkim._domainkey.MYDOMAIN.com txt

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.6 <<>> dkim._domainkey.MYDOMAIN.com txt
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 28805
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;dkim._domainkey.MYDOMAIN.com. IN	TXT

;; AUTHORITY SECTION:
MYDOMAIN.com.	1800	IN	SOA	ns1.MYDNS.net. MYNAME.MYDOMAIN.com. 2014010501 86400 7200 3600000 86400

;; Query time: 38 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Tue Jan  7 13:13:36 2014
;; MSG SIZE  rcvd: 110
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,913
2,201
363
Feel free to open a support ticket using the link in my signature so we can take a closer look. You can post the ticket number here so we can update this thread with the outcome.

Thank you.
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,913
2,201
363
To update, it was found that the third-party application MailScanner was installed on this system. While not necessarily the cause of this issue, we asked the customer to disable it to see if the issue continues.

Thank you.