meillo@9: \begin{tabular}[hbt]{| l || p{3.1em} | p{3.2em} | l | p{6em} |}
meillo@9: 	\hline
meillo@9: 	MTA & first release & lines of C code & architecture & design goals \\
meillo@9: 	\hline
meillo@9: 	\hline
meillo@9: 	sendmail & 1983 & 92k & monolithic & flexibility \\
meillo@9: 	\hline
meillo@9: 	exim & 1995 & 85k & monolithic & generality, flexibility, extensive checking \\
meillo@9: 	\hline
meillo@9: 	qmail & 1996 & 14k & modular & security \\
meillo@9: 	\hline
meillo@9: 	postfix & 1999 & 87k & modular & performance and security \\
meillo@9: 	\hline
meillo@9: 	masqmail & 1999 & 9k & monolithic & non-permanent Internet connections \\
meillo@9: 	\hline
meillo@9: \end{tabular}