1 \begin{tabular}[hbt]{| p{0.13\textwidth} || p{0.13\textwidth} | p{0.13\textwidth} | p{0.13\textwidth} | p{0.13\textwidth} | p{0.13\textwidth} |}

2 \hline

3 & sendmail & exim & qmail & postfix & masqmail \\

4 \hline

5 version regarded & & & & & \\

6 \hline \hline

7 First release & 1983 & 1995 & 1996 & 1999 & 1999 \\

8 \hline

9 Lines of code (with sloccount on debian packages)& 93k & 54k & 18k & 92k & 14k \\

10 \hline

11 Architecture & monolithic & monolithic & modular & modular & monolithic \\

12 \hline

13 Design goals & flexibility & general, flexible \& extensive facilities for checking & security & performance and security & for non-permanent Internet connection \\

14 \hline

15 \end{tabular}