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Original message:
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To: bill@irs.gov
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Hi.
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qmail-inject Fill in the complete envelope and header:
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| (envelope) from joe@heaven.af.mil to bill@irs.gov
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| From: joe@heaven.af.mil
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| To: bill@irs.gov
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| Hi.
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V
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qmail-queue Store message safely on disk.
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Trigger qmail-send.
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V
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qmail-send Look at envelope recipient, bill@irs.gov.
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| Is irs.gov in locals? No.
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| Is bill@irs.gov in virtualdomains? No.
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| Is irs.gov in virtualdomains? No.
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| Is .gov in virtualdomains? No.
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| Deliver remotely to bill@irs.gov.
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V
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qmail-rspawn Run qmail-remote.
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V
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qmail-remote Look at host name, irs.gov.
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Is irs.gov listed in smtproutes? Yes: ":bigbang.af.mil".
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Look up DNS A for bigbang.af.mil and connect by SMTP:
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MAIL FROM:<joe@heaven.af.mil>
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RCPT TO:<bill@irs.gov>
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