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3.00
MS-DOS
kb3rdparty
The information in this article applies to:
- Microsoft Mail Gateway to SMTP, version 3.0
The following steps outline how SMTPGATE.EXE processes incoming SMTP
messages. The files created and used by SMTPGATE.EXE are also described.
- From the RFC 821 information, we extract MAIL FROM and RCPT TO lines
up to the DATA command and put them in the SMTP_IN.ENV file.
- From the RFC822 information, we append all header lines, the message
text, and attachments after the DATA command and put them in the
SMTP_IN.822 file.
- The gateway translates the header part of the SMTP_IN.822 file.
- At the same time, it copies the header (filtering out the Receive lines
if the -T switch is not on) to the API_OUT.TMP temporary file. The
gateway closes API_OUT.TMP and records its size.
- API_OUT.TMP is reopened and appended with the body of SMTP_IN.822.
- The gateway creates the TO_NC.API file.
- The API_OUT.TMP file is copied into TO_NC.API.
- The body of SMTP_IN.822 is appended to the TO_NC.API file and the
attached files are UU decoded.
- SMTP spawns SMTPPUT.EXE, which uses TO_NC.API as its input file for
the Microsoft Mail postoffice. For more information on errors, query
on ERROR:SMTPPUT here in the Microsoft Knowledge Base.
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