228
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1 .PS
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2 # in and out channels of an mta
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3
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4 linewid = 1.5
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5
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6
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7 A: box "MTA" wid 1.5*boxwid ht 1.5*boxht
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8
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9 line <- left from 0.3<A.w,A.nw> "remote (SMTP)" above
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10 line <- left from 0.3<A.w,A.sw> "local (stdin)" below
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11
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12 line -> right from 0.3<A.e,A.ne> "remote (SMTP)" above
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13 line right linewid*2/3 from 0.3<A.e,A.se> "local (pipe)" below
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14 line -> down 1/6*linewid
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15 B: box "MDA" wid 0.75*boxwid ht 0.75*boxht
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16
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17 move 0.5*moveht
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18
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19 C: box invis "mailboxes" ht 0.3
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20
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21 arrow from 0.35<B.sw,B.se> to 0.2<C.nw,C.ne>
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22 arrow from 0.45<B.sw,B.se> to 0.4<C.nw,C.ne>
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23 arrow from 0.55<B.sw,B.se> to 0.6<C.nw,C.ne>
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24 arrow from 0.65<B.sw,B.se> to 0.8<C.nw,C.ne>
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