<div>
<div class="content wysiwyg-content">
does this mean the pequiven.com server rejecting email? 
 
This is the mail system at host smtp02.pequiven.com. 
 
I'm sorry to have to inform you that your message could not 
be delivered to one or more recipients. It's attached below. 
 
For further assistance, please send mail to postmaster. 
 
If you do so, please include this problem report. You can 
delete your own text from the attached returned message. 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; The mail system 
 
&lt;postmaster@pequiven.com&gt;: host 170.179.161.81[170.179.161.81] said: 554 Mail 
&nbsp; &nbsp;from xxx@gmail.com rejected for policy reasons. (in reply to 
&nbsp; &nbsp;MAIL FROM command) 
 
Final-Recipient: rfc822; postmaster@pequiven.com 
Original-Recipient: rfc822;postmaster@pequiven.com 
Action: failed 
Status: 5.0.0 
Remote-MTA: dns; 170.179.161.81 
Diagnostic-Code: smtp; 554 Mail from xxx@gmail.com rejected for 
&nbsp; &nbsp;policy reasons.
</div>
</div>

does this mean the pequiven.com server rejecting email?

This is the mail system at host smtp02.pequiven.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

 The mail system

<postmaster@pequiven.com>: host 170.179.161.81[170.179.161.81] said: 554 Mail
 from xxx@gmail.com rejected for policy reasons. (in reply to
 MAIL FROM command)

Final-Recipient: rfc822; postmaster@pequiven.com
Original-Recipient: rfc822;postmaster@pequiven.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; 170.179.161.81
Diagnostic-Code: smtp; 554 Mail from xxx@gmail.com rejected for
 policy reasons.

email error

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.

Email Clients

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

An email client, email reader or more formally mail user agent (MUA) is a computer program used to access and manage a user's email. A web application that provides message management, composition, and reception functions is sometimes also considered an email client, but more commonly referred to as webmail.