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Yes ,thanks for all the explanations. <br />
<br />
I need to know much about the difference between postfix and sendmail.As per your comment it states some one uses sendmail and others postfix. But you didnt told where it is used and what is its uses. Also i need to know is this used only for sending mail and how does it work? If some one delete the file sendmail.pid/postfix.pid ,will it not send any mails or will it crash the entire system?<br />
<br />
Thanks in advance.<br />

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Yes ,thanks for all the explanations.

I need to know much about the difference between postfix and sendmail.As per your comment it states some one uses sendmail and others postfix. But you didnt told where it is used and what is its uses. Also i need to know is this used only for sending mail and how does it work? If some one delete the file sendmail.pid/postfix.pid ,will it not send any mails or will it crash the entire system?

Thanks in advance.


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These are sounding allot like homework questions
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These are sounding allot like homework questions

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reason? please explain if u know!
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<div class="content wysiwyg-content">
What is the difference between sendmail and postfix ?<br />
Is there anything popular other than these two?<br />
I know these are smtp protocols<br />
And i need to know is this specific to linux?<br />
And need to know whether how check which smtp is my linux using ?<br />
<br />

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What is the difference between sendmail and postfix ?
Is there anything popular other than these two?
I know these are smtp protocols
And i need to know is this specific to linux?
And need to know whether how check which smtp is my linux using ?



What is the difference between sendmail and postfix ?

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

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

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.