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sendmail 8.13 Companion
book

sendmail 8.13 Companion

by Bryan Costales, George Jansen, Claus Assmann, Gregory Neil Shapiro
September 2004
Intermediate to advanced content levelIntermediate to advanced
192 pages
10h 12m
English
O'Reilly Media, Inc.
Content preview from sendmail 8.13 Companion

A Useful Table

The sendmail program reserves all lowercase letters, punctuation characters, and digits for its own use. For multi-character names, it reserves all those that begin with an underscore or a lowercase letter. Table 21-1 lists all the macro names that have special internal meaning to sendmail. Included in this list are macros that are used by the mc configuration technique.[29]

Table 21-1. Reserved macros

Macro

sendmail text reference

Description

$_

21.9.1[3ed]

RFC1413-validation and IP source route

$a

21.9.2[3ed]

The origin date in RFC822 format

${addr_type}

21.9.3[3ed]

Is address recipient/sender or header/envelope?

${alg_bits}

21.9.4[3ed]

The number of bits in the TLS cipher

${auth_authen}

21.9.5[3ed]

RFC2554 SASL AUTH credentials

${auth_author}

21.9.6[3ed]

RFC2554 SASL AUTH= parameter

${auth_ssf}

21.9.7[3ed]

SASL AUTH encryption key length

${auth_type}

21.9.8[3ed]

SASL Authentication mechanism used

$b

21.9.9[3ed]

The current date in RFC2822 format

${bodytype}

21.9.10[3ed]

The ESMTP (Extended SMTP) BODY parameter

$B

21.9.11[3ed]

The BITNET relay (mc configuration, deprecated)

$c

21.9.12[3ed]

The hop count

${cert_issuer}

21.9.13[3ed]

Distinguished name of certificate signer

${cert_md5}

21.9.14[3ed]

MD5 of cert certificate

${cert_subject}

21.9.15[3ed]

The cert subject

${cipher}

21.9.16[3ed]

Cipher suite used for connection

${cipher_bits}

21.9.17[3ed]

TLS encryption ...

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Publisher Resources

ISBN: 0596008457Catalog PageErrata