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|
qmail-smtpd Receive message by SMTP from another host:
| MAIL FROM:<joe@heaven.af.mil>
| RCPT TO:<bill@irs.gov>
|
| Is $RELAYCLIENT set? Yes: "".
| Accept RCPT.
V
qmail-queue Store message safely on disk.
Trigger qmail-send.
|
V
qmail-send Look at envelope recipient, bill@irs.gov.
| Is irs.gov in locals? No.
| Is bill@irs.gov in virtualdomains? No.
| Is irs.gov in virtualdomains? No.
| Is .gov in virtualdomains? No.
| Deliver remotely to bill@irs.gov.
V
qmail-rspawn Run qmail-remote.
|
V
qmail-remote Look at host name, irs.gov.
Is irs.gov listed in smtproutes? No.
Look up DNS MX/A for irs.gov and connect to it by SMTP:
MAIL FROM:<joe@heaven.af.mil>
RCPT TO:<bill@irs.gov>
|
