<div>
Thx for the insight all is working ok now
</div>


Thx for the insight all is working ok now

<div>
PTR record cannot be created by your domain dns panel<br />
it has to created by ISP who owns the public ip address used by you to send emails out
</div>


PTR record cannot be created by your domain dns panel
it has to created by ISP who owns the public ip address used by you to send emails out

<div>
This is stil no reverse lookup... &nbsp;for that you need a PTR record.
</div>


This is stil no reverse lookup...  for that you need a PTR record.

<div>
What tool can I use to check this issue?
</div>


<div>
dig &nbsp; &nbsp;-x 74.86.153.160<br />
<br />
(dig is a DNS query tool)<br />
<br />
<a href="https://mxtoolbox.com/" rel="ugc">https://mxtoolbox.com/</a><br />
has various checks..., &nbsp;look for a &nbsp;&amp; ptr. &nbsp;like in:<br />
<a href="https://mxtoolbox.com/SuperTool.aspx?action=ptr:74.86.153.160" rel="ugc">https://mxtoolbox.com/SuperTool.aspx?action=ptr:74.86.153.160</a><br />
<br />
(which tells biomedical-service.com &nbsp;which means you mail server needs to present that name as HELO (EHLO) announcement.
</div>


dig    -x 74.86.153.160

(dig is a DNS query tool)

https://mxtoolbox.com/ [https://mxtoolbox.com/]
has various checks...,  look for a  & ptr.  like in:
https://mxtoolbox.com/SuperTool.aspx?action=ptr:74.86.153.160 [https://mxtoolbox.com/SuperTool.aspx?action=ptr:74.86.153.160]

(which tells biomedical-service.com  which means you mail server needs to present that name as HELO (EHLO) announcement.

<div>
How can I check if my mail server presents biomedical-service.com as HELO (EHLO) announcement?<br />
<br />
Or is the mxtoolbox returning that ptr means it is ok?
</div>


How can I check if my mail server presents biomedical-service.com as HELO (EHLO) announcement?

Or is the mxtoolbox returning that ptr means it is ok?

<div>
No MXtoolbox only checks DNS entries. That should be in the configuration...
</div>


No MXtoolbox only checks DNS entries. That should be in the configuration...

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<div class="content wysiwyg-content">
I need to add a reverse dns record in my dns configuration.<br />
<br />
I am getting this error &nbsp;74.86.153.160 is the ip of the mail server<br />
<br />
Remote host said: 451 4.1.8 Possibly forged hostname for 74.86.153.160<br />
<br />
I have access to the dns zone &nbsp;of the domain<br />
<br />
Any ideas
</div>
</div>


I need to add a reverse dns record in my dns configuration.

I am getting this error  74.86.153.160 is the ip of the mail server

Remote host said: 451 4.1.8 Possibly forged hostname for 74.86.153.160

I have access to the dns zone  of the domain

Any ideas

Reverse dns record in my dns configuration

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.