Warning: message delayed 24 hours? How to fix it?

Emily Routledge

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Aug 13, 2016
Messages
61
Points
8
Hi everyone,

Can you guys tell me why I am getting this error when sending emails to @gmail.com or @yahoo.com

From: Mail Delivery System <[email protected]>
This message was created automatically by mail delivery software.
A message that you sent has not yet been delivered to one or more of its recipients after more than 24 hours on the queue on server.example.com.

The message identifier is: 1ciHMT-0006c3-4y
The subject of the message is: RE: My answers to your questions
The date of the message is: Mon, 27 Feb 2017 16:12:47 +0700

The addresses to which the message has not yet been delivered are:

[email protected]
host mta6.am0.yahoodns.net [98.136.216.26]
Delay reason: SMTP error from remote mail server after pipelined MAIL FROM:<[email protected]> SIZE=214844:
421 4.7.0 [TSS04] Messages from MY_IP_ADDRESS temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html
[email protected]
host mta5.am0.yahoodns.net [98.136.217.203]
Delay reason: SMTP error from remote mail server after pipelined MAIL FROM:<[email protected]> SIZE=214844:
421 4.7.0 [TSS04] Messages from MY_IP_ADDRESS temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html
[email protected]

No action is required on your part. Delivery attempts will continue for some time, and this warning may be repeated at intervals if the message remains undelivered. Eventually the mail delivery software will give up, and when that happens, the message will be returned to you.
the content in a details.txt file

Reporting-MTA: dns; server.xxxxxx.com

Action: delayed
Final-Recipient: rfc822;[email protected]
Status: 4.0.0
Remote-MTA: dns; alt4.gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 421-4.7.0 [MY_IP_ADDRESS 15] Our system has detected an unusual rate of
421-4.7.0 unsolicited mail originating from your IP address. To protect our
421-4.7.0 users from spam, mail sent from your IP address has been temporarily
421-4.7.0 rate limited. Please visit
421-4.7.0 https://support.google.com/mail/?p=UnsolicitedRateLimitError to
421 4.7.0 review our Bulk Email Senders Guidelines. k188si16652286wma.76 - gsmtp

Action: delayed
Final-Recipient: rfc822;[email protected]
Status: 4.0.0
Remote-MTA: dns; mta6.am0.yahoodns.net
Diagnostic-Code: smtp; 421 4.7.0 [TSS04] Messages from MY_IP_ADDRESS temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html
 

24x7CSM

Well-known member
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Sep 27, 2016
Messages
263
Points
28
Your server IP has been black listed for spamming issues by google and yahoo and hence you are not able to send the mails.

If you are using your own server , you will have to check the server for malicious script like PHP which are generating spams , you will need to tweak the mail server , scan the server with maldet , secure and harden server to improve the mail service security.
 

Emily Routledge

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Aug 13, 2016
Messages
61
Points
8
Emily Routledge
How can it happen that? we are only sending emails to our customers :)

Is there a place to check if our IP or domains are getting blacklisted by mail servers?

What is maldet? how to use to scan our server?
 

24x7CSM

Well-known member
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Sep 27, 2016
Messages
263
Points
28
You are right , but if you have websites hosted on the same server with wordpress , joomla and if the server is not secured properly your server can be a open relay in such situations your server can be used to send mails by spammers , malicious PHP scripts.

You can check the IP blacklist at

http://www.dnsbl.info/
 

hostgliders

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Feb 17, 2017
Messages
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Points
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If you are unable to send email to gmail or yahoo but you are able to send emails to other domains perfectly, most probably your mail ip/server ip got blacklisted in gmail or yahoo spam database. So you need to send a delist request google or yahoo accordingly to whitelist your ip.

Regarding sending spam, spammers can get into your hosting account via outdated wordpress plugins,themes and can generate mass spam emails via php scripts. Scan your account periodically and update wordpress/joomla to avoid such incidents.
 

iserveradmin11

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Registered
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Mar 17, 2017
Messages
60
Points
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Hello ,
This is surely the case of spamming , though you only send the mails to respective clients but when a person uses the third party plugins then they may create spamming through infected files.
Due to which spamming is created which may cause gmail or yahoo mail to block one's IP .
So, firt of all you may scan your server and do clean it.
After that use several server hardening method to secure your server by spamming.
And contact gmail and yahoo mail support for your issue.
 
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