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I have test the multiple domain that is no problem to received email but how about smtp ?<br />
like user@abc.com sending the mail and recipient able to see is send from &nbsp;user@abc.com and user@cba.com and recipient able to see is send from &nbsp;user@cba.com.
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The sending will all be from a single IP, but the SMTP envelope &amp;&nbsp;the message sent will contain the domain of the sender.
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If i one IP to host the multiple domain ,may i know any issue or not ?
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If i one IP to host the multiple domain ,may i know any issue or not ?

Multiple Domain and use one IP for Hmailserver

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

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.