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Dept of Chemistry

Outbound Mail Message Phase 1. U. of W. Email Services. Dept of Chemistry. External Mail Transfer Agent SMTP Server server.otherplace.edu. Departmental Mail Server gibbs.chem.washington.edu. SMTP Server. Mail User Agent (e.g. IMAP ). Chair-PC. Sending Email Client.

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Dept of Chemistry

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  1. Outbound Mail Message Phase 1 U. of W Email Services Dept of Chemistry External Mail Transfer Agent SMTP Server server.otherplace.edu Departmental Mail Server gibbs.chem.washington.edu SMTP Server Mail User Agent (e.g. IMAP) Chair-PC Sending Email Client

  2. Outbound Mail Message Phase 2 & Phase 3 U. of W Email Services Dept of Chemistry External Mail Transfer Agent SMTP Server server.otherplace.edu Originating Mail Transfer Agent SMTP server smtp.u.washington.edu Mail User Agent (e.g. IMAP) Chair-PC Sending Email Client

  3. Chair-PC Recipient Email Client DNS Server MX Record chem.washington.edu --> gibbs.chem.washington.edu Inbound Mail Message Phase 1 U. of W Email Services Dept of Chemistry Configuration: /etc/mail/local-host-names “I [gibbs] am chem.washington.edu” External Mail Transfer Agent SMTP Server server.otherplace.edu Departmental Mail Server gibbs.chem.washington.edu SMTP server IMAP server DNS Query: Who is email server for domain “chem.washington.edu”? DNS Reply: gibbs.chem.washington.edu

  4. Chair-PC Recipient Email Client DNS Server MX Record chem.washington.edu --> gib@bs.chem.washington.edu Inbound Mail Message Phase 2 U. of W Email Services Email Services Dept of Chemistry Configuration: /etc/mail/local-host-names “I [gibbs] am chem.washington.edu” External Mail Transfer Agent SMTP Server server.otherplace.edu Departmental Mail Server gibbs.chem.washington.edu SMTP Server (Forward Only) Receiving SMTP server smtp.washington.edu Alias Table chair->chemchair@uw.edu IMAP server ...deskmail.u.wa...edu DNS Query: Who is email server for domain “chem.washington.edu”? DNS Reply: gibbs.chem.washington.edu

  5. Chair-PC Recipient Email Client DNS Server MX Record chem.washington.edu --> smtp.washington.edu Inbound Mail Message Phase 3 “Flipping the Switch” U. of W Email Services Email Services Dept of Chemistry Configuration: “I [smtp.wa...] am chem.washington.edu” External Mail Transfer Agent SMTP Server server.otherplace.edu SMTP Server Receiving SMTP server smtp.washington.edu Alias Table chair->chemchair@uw.edu IMAP server ...deskmail.u.wa...edu DNS Query: Who is email server for domain “chem.washington.edu”? DNS Reply: smtp.washington.edu smtp.washington.edu

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