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SMTPã«é–¢ã™ã‚‹otsuneã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (3)

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nobilog2: Stupid Networkã¨25ç•ªãƒãƒ¼ãƒˆ
ä¸€æ˜¨æ—¥ã€CNet Japan Innovation Conference 2006 Autumnã®å–æã¨ï¼“æ™‚é–“ãŒã‹ã‚Šã®æ‰“ã¡åˆã‚ã›ã‚’çµ‚ãˆã¦å¸°å®…ã€‚ æºœã¾ã‚Šã«æºœã¾ã£ãŸãƒ¡ãƒ¼ãƒ«ã®è¿”äº‹ã‚’æ›¸ã„ã¦é€ã‚ã†ã¨ã™ã‚‹ã‚‚ãªãœã‹é€ä¿¡ã§ããªã„ã€‚ é•ã†SMTPã‚µãƒ¼ãƒãƒ¼ã‚’æŒ‡å®šã—ã¦ã‚‚ãƒ€ãƒ¡ã€‚ æ€¥ãŽã®ãƒ¡ãƒ¼ãƒ«ã ã‘Gmailã‹ã‚‰é€ã£ã¦å¯¾å‡¦ã—ãŸãŒã€åŽŸå› ãŒä¸€å‘ã«ã‚ã‹ã‚‰ãªã„ã€‚ é›»åãƒ¡ãƒ¼ãƒ«ã‚½ãƒ•ãƒˆã‚’ä½¿ã£ãŸã®ã§ã¯ã€ä½•ãŒèµ·ãã¦ã„ã‚‹ã®ã‹ã‚ã‹ã‚‰ãªã„ã®ã§ã‚¿ãƒ¼ãƒŸãƒŠãƒ«ã‹ã‚‰telnetã‚’ä½¿ã£ã¦SMTPã‚µãƒ¼ãƒãƒ¼ã«ã‚¢ã‚¯ã‚»ã‚¹ã—ã¦ã¿ãŸã‚‚ã®ã®ã€ä½•ã‚‚ã—ãªã„ã®ã«å‹æ‰‹ã«ã‚»ãƒƒã‚·ãƒ§ãƒ³ãŒé–‰ã˜ã‚‰ã‚Œã¦ã—ã¾ã†ã€‚ ï¼ˆtelnet ï¼œSMTPã‚µãƒ¼ãƒãƒ¼ã®ã‚¢ãƒ‰ãƒ¬ã‚¹ï¼ž smtpã€€ãªã©ã¨ã™ã‚Œã°ã‚ˆã„ï¼‰ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®é€šä¿¡ã¯ã€ä¾‹ãˆã°Webãƒšãƒ¼ã‚¸ã®è»¢é€ã¯80ç•ªã€ãƒ¡ãƒ¼ãƒ«ã®é€ä¿¡ã¯25ç•ªã¨ã„ã£ãŸå…·åˆã«ã€ç”¨é€”ã”ã¨ã«æƒ…å ±ã®é€šã‚Šé“ãŒæ±ºã¾ã£ã¦ã„ã‚‹ãŒã€è©¦ã—ã«ã‚µãƒ¼ãƒãƒ¼è¨å®šã‚‚å¤‰ãˆã¦ã€25ç•ªä»¥å¤–ã®ãƒãƒ¼ãƒˆã‹ã‚‰é€ä¿¡ã—ã¦ã¿ãŸã‚‰ç„¡
otsune 2006/09/29
Submission port 587ã¯é–‹ã‘ã¦ã„ã‚‹ã‚“ã ã‹ã‚‰ã€‚èª¿ã¹ã‚‚ã›ãšã«æ–‡å¥ã‚’è¨€ã†ã®ã¯ISPã«å¯¾ã™ã‚‹FUD

SMTP

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Message-ID
Message-ID ã«é–¢ã™ã‚‹è€ƒå¯Ÿï¼ˆç¬¬ä¸‰ç‰ˆï¼‰ï¼šæ”¹è¨‚ä½œæ¥ä¸ 1998å¹´8æœˆ9æ—¥åˆç‰ˆç™ºè¡Œã€1999å¹´2æœˆ5æ—¥ç¬¬äºŒç‰ˆç™ºè¡Œã€2001å¹´3æœˆ16æ—¥ç¬¬ä¸‰ç‰ˆæ”¹è¨‚ä¸ ç›®æ¬¡ ã¯ã˜ã‚ã« Message-ID ã¨ã¯ä½•ã‹ï¼Ÿ Message-ID ã¯ä»˜ã‘ã‚‹ã¹ãã‚‚ã®ã‹ï¼Ÿ Message-ID ã¯ã©ã“ã§ç”Ÿæˆã•ã‚Œã‚‹ã®ã‹ï¼Ÿ Message-ID ã¯ã©ã®ã‚ˆã†ãªå½¢å¼ã§ç”Ÿæˆã•ã‚Œã‚‹ã®ã‹ï¼Ÿ ãƒ¦ãƒ‹ãƒ¼ã‚¯ãª Message-ID ã‚’ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆãƒžã‚·ãƒ³ã®ãƒ¡ã‚¤ãƒ©ãƒ¼ãŒç”Ÿæˆã§ãã‚‹ã‹ï¼Ÿ è£œè¶³æ–‡æ›¸ qmail ã¨ãƒ˜ãƒƒãƒ€ãƒ¼ã®è£œå®Œã«é–¢ã—ã¦ RFC2476 Message Submission Windows ã«ãŠã‘ã‚‹ TCP/IP ã®è¨å®š ã¯ã˜ã‚ã« ã“ã®æ–‡æ›¸ã¯ãƒ¡ã‚¤ãƒ«ã«ãŠã‘ã‚‹ Message-ID ã«å¯¾ã™ã‚‹è€ƒå¯Ÿã‚’è¡Œã£ãŸã‚‚ã®ã§ã‚ã‚‹ã€‚ãƒ‹ãƒ¥ãƒ¼ã‚ºã«é–¢ã—ã¦ã¯è¡Œã£ã¦ã„ãªã„ã“ã¨ã‚’ã‚ã‚‰ã‹ã˜ã‚è€ƒæ…®ã—ã¦ã„ãŸã ããŸã„ã€‚ ã“ã®è°è«–ã®å©ãå°ã¨ã—ã¦ã€ãƒ¡ã‚¤ãƒ«ã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã®å½¢å¼ã‚’å®šã‚ãŸ
otsune 2006/08/13
SMTP
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Fallback from the Submission port to the SMTP port
Kazu Yamamoto IIJ Research Laboratory Written: November 9, 2005 Modified: December 28, 2005 Abstract To solve the probl em of spam messages, a mail-reader should use the Submission port (587) instead of the SMTP port (25), which is used currently, when sending a message. The author would propose to change a mail-reader so that it first tries the Submission port then makes a connection to the S
otsune 2005/11/11
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Fallback from the Submission port to the SMTP port

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