554 Message not allowed - [298] from Yahoo

Error

 554 Message not allowed - [298]

After sending an email to Yahoo Email Account

------ Error Details ----------
Delivery to the following recipient failed permanently:

     account@yahoo.com

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain yahoo.com by mta6.am0.yahoodns.net. [66.196.118.240].

The error that the other server returned was:
554 Message not allowed - [298]
-------------------------------------

Solution

There is no one solution to this problem, try all the following


#1 Yahoo Spam Filter BUG

I found that Yahoo may drop an incoming email to a user just because they suspect this email to be spam, the mail gets dropped silently and the user will never get it in SPAM folder and will not get any warning or notice

More information here:  
http://karim-ouda.blogspot.com/2014/07/yahoo-is-dropping-incoming-email.html

#2 Your email server

Add masquerade to your /etc/mail/sendmail.mc

MASQUERADE_AS(yourdomain.com)dnl
FEATURE(masquerade_envelope)dnl
FEATURE(masquerade_entire_domain)dnl
MASQUERADE_DOMAIN(yourdomain.com)dnl

More here:http://www.cyberciti.biz/tips/sendmail-masquerading-configuration-howto.html

If you are using php mail() function, you may need to add "-f$fromaddress" as an argument

Also i wasn't able to send email from Thunderbird, i managed to fix it by changing Media mail server to "XXX.mail01.mtsvc.net" instead of "XXXX.accessdomain.com" 

#3 Others

   
From Yahoo help article:

Indicates that your email was not accepted because the message in question may contain characteristics that Yahoo Mail will not accept for policy reasons.
- For example, it is against Yahoo Mail's policy to accept messages with malicious content or manipulated header information, such as:

A falsified origination point.
An altered sending date.
A forged email address.

References


https://help.yahoo.com/kb/mail-for-desktop/smtp-error-codes-sln23996.html
https://help.yahoo.com/kb/mail-for-desktop/practices-bulk-mail-senders-postmasters-sending-yahoo-mail-sln3435.html
https://help.yahoo.com/kb/mail-for-desktop/SLN4781.html?impressions=true
http://www.cyberciti.biz/tips/sendmail-masquerading-configuration-howto.html
http://karim-ouda.blogspot.com/2014/07/yahoo-is-dropping-incoming-email.html

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