1 \begin{tabular}[hbt]{| r || p{0.16\textwidth} r | p{0.16\textwidth} r | p{0.16\textwidth} r |}

2 \hline

3 \# &

4 Bernstein & 2001 &

5 O'ReillyNet & 2007 &

6 MailRadar & \\

7 \hline \hline

8 1 &

9 \textbf{sendmail} & 42.3\,\% &

10 \textbf{sendmail} & 12.3\,\% &

11 \textbf{sendmail} & 24\,\% \\

12 \hline

13 2 &

14 Microsoft Exchange & 18.4\,\% &

15 \textbf{postfix} & 8.6\,\% &

16 \textbf{postfix} & 20\,\% \\

17 \hline

18 3 &

19 \textbf{qmail} & 17.4\,\% &

20 Microsoft Exchange & 7.6\,\% &

21 \textbf{qmail} & 17\,\% \\

22 \hline

23 4 &

24 IMail & 5.9\,\% &

25 \textbf{qmail} & 5.3\,\% &

26 Microsoft Mail & 15\,\% \\

27 \hline

28 5 &

29 \textbf{postfix} & 1.6\,\% &

30 \textbf{exim} & 5.0\,\% &

31 \textbf{exim} & 13\,\% \\

32 \hline

33 6 &

34 \textbf{exim} & 1.5\,\% &

35 Cisco & 3.0\,\% &

36 IMail & 2\,\% \\

37 \hline

38 7 &

39 NTMail & 1.3\,\% &

40 Barracuda & 2.8\,\% &

41 Microsoft Exchange & 1\,\% \\

42 % \hline

43 % 8 &

44 %NetWin Dmail & 0.8\,\% &

45 % & &

46 %mail security layers & 1\,\% \\

47 % \hline

48 % 9 &

49 %Software.com Post.Office & 0.6\,\% &

50 % & &

51 %InterMail & 1\,\% \\

52 % \hline

53 % 10 &

54 % & &

55 % & &

56 %Lotus Domino & 1\,\% \\

57 % \hline

58 \hline \hline

59 &

60 \textit{mail security layers} & $\approx$ 4\,\% & %smap 2.4 and some small ones

61 \textit{mail security layers} & $\approx$ 22\,\% &

62 \textit{mail security layers} & $\approx$ 2\,\% \\ % symantec 1

63 \hline

64 \end{tabular}

65

66

67

68 %\begin{tabular}[hbt]{| r || p{0.16\textwidth} r | p{0.16\textwidth} r | p{0.16\textwidth} r |}

69 % \hline

70 % \# & O'ReillyNet & 2007 & MailRadar & YYYY & Bernstein & 2001 \\

71 % \hline \hline

72 % 1 & \textbf{sendmail} & 12.3\,\% & \textbf{sendmail} & 24\,\% & \textbf{sendmail} & 42.3\,\% \\

73 % \hline

74 % 2 & \textbf{postfix} & 8.6\,\% & \textbf{postfix} & 20\,\% & Microsoft Exchange & 18.4\,\% \\

75 % \hline

76 % 3 & Postini & 8.5\,\% & \textbf{qmail} & 17\,\% & \textbf{qmail} & 17.4\,\% \\

77 % \hline

78 % 4 & Microsoft Exchange & 7.6\,\% & Microsoft Mail & 15\,\% & IMail & 5.9\,\% \\

79 % \hline

80 % 5 & MXLogic & 6.0\,\% & \textbf{exim} & 13\,\% & smap & 2.4\,\% \\

81 % \hline

82 % 6 & \textbf{qmail} & 5.3\,\% & IMail & 2\,\% & \textbf{postfix} & 1.6\,\% \\

83 % \hline

84 % 7 & \textbf{exim} & 5.0\,\% & Microsoft Exchange & 1\,\% & \textbf{exim} & 1.5\,\% \\

85 % \hline

86 % 8 & Concentric Hosting & 4.5\,\% & Symantec Mail Security & 1\,\% & NTMail & 1.3\,\% \\

87 % \hline

88 % 9 & Cisco & 3.0\,\% & InterMail & 1\,\% & NetWin Dmail & 0.8\,\% \\

89 % \hline

90 % 10 & Barracuda & 2.8\,\% & Lotus Domino & 1\,\% & Software.com Post.Office & 0.6\,\% \\

91 % \hline

92 %\end{tabular}

93