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comparison thesis/tex/3-MailTransferAgents.tex @ 316:f3a86ce788ec

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author meillo@marmaro.de
date Wed, 21 Jan 2009 15:19:25 +0100
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comparison
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315:734afc9b1a9f 316:f3a86ce788ec
103 \end{center} 103 \end{center}
104 \caption{Market share of \MTA{}s} 104 \caption{Market share of \MTA{}s}
105 \label{tab:mta-market-share} 105 \label{tab:mta-market-share}
106 \end{table} 106 \end{table}
107 107
108 All surveys show high market shares for the four \MTA{}s: \sendmail, \exim, \qmail, and \postfix. Only the \name{Microsoft} mail server software and \name{IMail} have comparable large shares. Other \freesw\ \mta{}s (\name{smail}, \name{zmailer}, \name{MMDF}, \name{courier-mta}) are less important and seldom used. 108 All surveys show high market shares for the four \MTA{}s: \sendmail, \exim, \qmail, and \postfix. Only the \name{Microsoft} mail server software and \name{IMail} have comparable large shares. Other \freesw\ \mta{}s (\name{smail}, \name{zmailer}, \NAME{MMDF}, \name{courier-mta}) are less important and seldom used.
109 109
110 The three surveys base on different data. \person{Bernstein} took 1\,000\,000 randomly chosen \NAME{IP} addresses, containing 39\,206 valid hosts; 958 of them accepted \NAME{SMTP} connections. The \person{Simpson} and \person{Bekman} survey used only domains owned by companies; in total 400\,000 hosts. \name{MailRadar} scanned 2\,818\,895 servers, leading to 59\,209 accepted connections. 110 The three surveys base on different data. \person{Bernstein} took 1\,000\,000 randomly chosen \NAME{IP} addresses, containing 39\,206 valid hosts; 958 of them accepted \NAME{SMTP} connections. The \person{Simpson} and \person{Bekman} survey used only domains owned by companies; in total 400\,000 hosts. \name{MailRadar} scanned 2\,818\,895 servers, leading to 59\,209 accepted connections.
111 111
112 All surveys show \sendmail\ to be the most popular \MTA. \postfix, \qmail, and \exim\ are among the best seven in each. \exim\ has slightly smaller shares than the other two. The four together share more than half of the market according to \person{Bernstein} and the \name{MailRadar} statistics. \person{Simpson} and \person{Bekman} have their share to be somewhere between a third and the half. This uncertainty comes from the large amount of unidentifiable \MTA{}s. 112 All surveys show \sendmail\ to be the most popular \MTA. \postfix, \qmail, and \exim\ are among the best seven in each. \exim\ has slightly smaller shares than the other two. The four together share more than half of the market according to \person{Bernstein} and the \name{MailRadar} statistics. \person{Simpson} and \person{Bekman} have their share to be somewhere between a third and the half. This uncertainty comes from the large amount of unidentifiable \MTA{}s.
113 113
185 \section{Comparison of MTAs} 185 \section{Comparison of MTAs}
186 \label{sec:mta-comparison} 186 \label{sec:mta-comparison}
187 187
188 This section does not try to provide a throughout \MTA\ comparison, because this is already done by others. Remarkable comparisons are the one by \person{Dan Shearer} \cite{shearer06} and a discussion on the mailing list \name{plug@lists.q-linux.com} \cite{plug:mtas}. Tabular overviews may be found at \citeweb{mailsoftware42}, \citeweb{wikipedia:comparison-of-mail-servers}, and \cite[section 1.9]{lifewithqmail}. 188 This section does not try to provide a throughout \MTA\ comparison, because this is already done by others. Remarkable comparisons are the one by \person{Dan Shearer} \cite{shearer06} and a discussion on the mailing list \name{plug@lists.q-linux.com} \cite{plug:mtas}. Tabular overviews may be found at \citeweb{mailsoftware42}, \citeweb{wikipedia:comparison-of-mail-servers}, and \cite[section 1.9]{lifewithqmail}.
189 189
190 Here provided is an overview important properties of the four previously introduced \MTA{}s. The data comes from the above stated sources and is collected in table \ref{tab:mta-comparison}\footnote{The lines of code were messured with \person{David~A.\ Wheeler}'s \name{sloccount} \citeweb{sloccount}.}. 190 Here provided is an overview important properties of the four previously introduced \MTA{}s. The data comes from the above stated sources and is collected in table \ref{tab:mta-comparison}\footnote{The lines of code were measured with \person{David~A.\ Wheeler}'s \name{sloccount} \citeweb{sloccount}.}.
191 191
192 \begin{table} 192 \begin{table}
193 % FIXME: improve table data!!! 193 % FIXME: improve table data!!!
194 \begin{center} 194 \begin{center}
195 \input{tbl/mta-comparison.tbl} 195 \input{tbl/mta-comparison.tbl}