计算机网络与通信（部分章节）：06第六章 因特网

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Server: 250 message accept Client : QUIT Server: 221 goodluck closing connection 3a187a72a188a111a189a191a190a76a192a194a193a72a195a72a196a72a197a72a198 UA (mail) Sendmail a199 a200 a201 Sendmail a202 a203 a204 a205 a206 a207 a204 a205 a208 To: From: CC: Subject: a204 a205 a209 a210 a211 a211 a211 . a212a209 a210 a213 a214 a215 a216 a217 a204 a205 a218 a219 a204 a205 a220 a206 a204 a205 a221 a222 a204 a205 a206 a207 a204 a205 a208 a208 a211 UA (mail) a223 a224 a204 a225 a223 a224 a226 a219 a227 a228 a223 a224 a226 a219 a227 a228 a223 a224 a206 a207 a204 a205 a223 a224a229a230 a204 a205 a231a15a232a49a233 “ a234a22a235 --a236a22a237 --a238a36a239 ”a240a20a241a22a242 a233a158a243a36a231a9a232a49a233 a234a158a235a49a244a158a245a20a246 a247a36a248 a238a36a239a22a249 “a250a20a251 ”--a252a158a250a36a253a158a254 a231a9a232a36a255a1a0a20a243a36a231a9a232a3a2a1a4 a250a22a254a3a5 a233a20a231a7a6a9a8a158a243 a238a20a239a20a249a3a10a20a244a12a11a14a13a9a238a36a239 a243a14a15a17a16a19a18a1a20a14a21 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