<div>
so this message isn't returned from the remote server ? instead it is generated from our ironport device?<br />
yes. my office use ironport
</div>


<div>
<div class="content wysiwyg-content">
hi:<br />
a user told me that he sent email to couple of external email address but they never received his email message. no bounce back were received by him either. i checked our mail server transmission log and found that messages were sent out but ended with the following message<br />
<br />
Message 12345567 to abc@xyz.com received remote SMTP response 'possible delivery'. &nbsp;<br />
<br />
what is &quot;possible delivery&quot; mean? <br />

</div>
</div>


hi:
a user told me that he sent email to couple of external email address but they never received his email message. no bounce back were received by him either. i checked our mail server transmission log and found that messages were sent out but ended with the following message

Message 12345567 to abc@xyz.com received remote SMTP response 'possible delivery'.  

what is "possible delivery" mean? 


so this message isn&amp;#39;t returned from the remote server ? instead it is generated from our ironport device?
yes. my office use ironport

&amp;#39;possible delivery&amp;#39; - what is it mean?

hi:
a user told me that he sent email to couple of external email address but they never received his email message. no bounce back were received by him either. i checked our mail server transmission log and found that messages were sent out but ended with the following message

Message 12345567 to abc@xyz.com received remote SMTP response &amp;#39;possible delivery&amp;#39;.  

what is &amp;quot;possible delivery&amp;quot; mean? 


'possible delivery' - what is it mean?

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Email Protocols

Software is any set of instructions that directs a computer to perform specific tasks or operations. Computer software consists of programs, libraries and related non-executable data (such as documentation). Computer software is non-tangible, contrasted with computer hardware, which is the physical component of computers. Software written in a machine language is known as "machine code". However, in practice, software is usually written in high-level programming languages than machine language. High-level languages are translated into machine language using a compiler or interpreter or a combination of the two.

Software

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.