Mercurial > docs > diploma
diff thesis/tex/1-Introduction.tex @ 378:c9a6cbce35fd
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author | meillo@marmaro.de |
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date | Tue, 03 Feb 2009 18:01:33 +0100 |
parents | ef7db2d0f3a1 |
children | 16d8eacf60e1 |
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--- a/thesis/tex/1-Introduction.tex Tue Feb 03 17:53:03 2009 +0100 +++ b/thesis/tex/1-Introduction.tex Tue Feb 03 18:01:33 2009 +0100 @@ -17,12 +17,12 @@ \subsubsection{Mail agents} \index{mail agents} -This thesis will frequently use the three terms: \MTA, \MUA{}, and \MDA{}, naming the three different kinds of nodes of the email infrastructure. Here, they are explained with references to the ``snail mail'' system which is known from everyday life. Figure \ref{fig:mail-agents} shows the relation between those three mail agents and the way an email message takes when passing through the system. +This thesis will frequently use the three terms: \MTA, \MUA{}, and \MDA{}, naming the three different kinds of nodes of the email infrastructure. Here, they are explained with references to the ``snail mail'' system which is known from everyday life. Figure~\ref{fig:mail-agents} shows the relation between those three mail agents and the way an email message takes when passing through the system. \begin{description} \item[\MTA:] \index{mta} -\name{Mail Transfer Agents} are the post offices for electronic mail. The basic job of an \MTA\ is to transport mail from senders to recipients, or more pedantic: from \MTA\ to \MTA. \sendmail, \exim, \qmail, \postfix, and, of course, \masqmail\ are \MTA{}s. \MTA{}s are explained in more detail in chapter \ref{chap:mail-transfer-agents}. +\name{Mail Transfer Agents} are the post offices for electronic mail. The basic job of an \MTA\ is to transport mail from senders to recipients, or more pedantic: from \MTA\ to \MTA. \sendmail, \exim, \qmail, \postfix, and, of course, \masqmail\ are \MTA{}s. \MTA{}s are explained in more detail in chapter~\ref{chap:mail-transfer-agents}. \item[\MUA{}:] \index{mua} @@ -120,7 +120,7 @@ The program is a good replacement ``in these cases'' but not generally, since it lacks essential features for running on publically accessable mail servers. It is primarily not secure enough for being accessible from untrusted locations. -\masqmail\ is best used in home networks which are non-permanently connected to the Internet. It is easy configurable for situations which are rarely solvable with the common \MTA{}s. Such include different handling of mail to local or remote destination and respecting different routes of online connection. These features are explained in more detail in section \ref{sec:masqmail-features}. +\masqmail\ is best used in home networks which are non-permanently connected to the Internet. It is easy configurable for situations which are rarely solvable with the common \MTA{}s. Such include different handling of mail to local or remote destination and respecting different routes of online connection. These features are explained in more detail in section~\ref{sec:masqmail-features}. While many other \MTA{}s are general purpose \MTA{}s, \masqmail\ aims on special situations. Nevertheless, it can be used as general purpose \MTA\ too. Especially this was a design goal of \masqmail: To be a replacement for \sendmail\ or similar \MTA{}s. @@ -130,7 +130,7 @@ \subsubsection*{Typical usage scenarios} -This section describes three common setups that make sensible use of \masqmail. The first two are shown in figure \ref{fig:masqmail-typical-usage}. +This section describes three common setups that make sensible use of \masqmail. The first two are shown in figure~\ref{fig:masqmail-typical-usage}. \begin{figure} \begin{center} @@ -150,7 +150,7 @@ \item[Scenario 2:] \label{scenario2} -In the same network but with a server, one could have \masqmail\ running on the server and using simple forwarders (see \ref{subsec:relay-only}) on the workstations to transfer mail to the server. The server would then, dependent on the destination of the message, deliver locally or relay to an \NAME{ISP}'s server for further relay. This setup does only support mail transfer to the server but not back to a workstation. However, this can be solved by mounting the user's mailbox from the server to the workstation or by using \NAME{POP3} or \NAME{IMAP}. Mail transfer from the \NAME{ISP} to the local server needs \NAME{POP3} or \NAME{IMAP} as well. +In the same network but with a server, one could have \masqmail\ running on the server and using simple forwarders (see section~\ref{subsec:relay-only}) on the workstations to transfer mail to the server. The server would then, dependent on the destination of the message, deliver locally or relay to an \NAME{ISP}'s server for further relay. This setup does only support mail transfer to the server but not back to a workstation. However, this can be solved by mounting the user's mailbox from the server to the workstation or by using \NAME{POP3} or \NAME{IMAP}. Mail transfer from the \NAME{ISP} to the local server needs \NAME{POP3} or \NAME{IMAP} as well. \item[Scenario 3:] \label{scenario3} @@ -224,7 +224,7 @@ \item \NAME{TCP} sockets to transfer mail to other \MTA{}s using the \SMTP\ protocol \end{enumerate} -Figure \ref{fig:masqmail-channels} shows this as a picture. (The ``online state'' input is explained a bit later.) +Figure~\ref{fig:masqmail-channels} shows this as a picture. (The ``online state'' input is explained a bit later.) \begin{figure} \begin{center} @@ -297,7 +297,7 @@ \hfill\citeweb[post~\#8]{ubuntuforums:simple-mailer} \end{quote} -Not to forget \masqmail's size. \masqmail\ is much smaller than full-blown \MTA{}s like \sendmail, \postfix, or \exim, and still smaller than \qmail. (See section \ref{sec:mta-comparison} for details.) This makes \masqmail\ a good choice for workstations or even embedded computers. +Not to forget \masqmail's size. \masqmail\ is much smaller than full-blown \MTA{}s like \sendmail, \postfix, or \exim, and still smaller than \qmail. (See section~\ref{sec:mta-comparison} for details.) This makes \masqmail\ a good choice for workstations or even embedded computers. Again words of a user who chose \masqmail\ as \MTA\ on his old laptop with a 75 megahertz processor and eight megabytes of \NAME{RAM}: \begin{quote}