Name
-7
Synopsis
Ordinarily, when mail is delivered using LMTP, the LMTP conversation begins like this:
220 yourhost LMTP ready ←mail.local sends >>> LHLO yourhost.your.domain ←sendmail sends 250-yourhost ←mail.local sends 250-8BITMIME ←note 250-ENHANCEDSTATUSCODES 250 PIPELINING
Here, mail.local is telling
sendmail (in the fourth line) that it can
correctly handle 8-bit MIME (EightBitMode) in
received messages. If your site is a 7-bit only site, you should not
allow mail.local to accept 8-bit MIME messages.
You disallow 8-bit MIME by specifying this -7
command-line switch:
FEATURE(`local_lmtp') define(`LOCAL_MAILER_ARGS', `mail.local -l -7')
Here, the -7
command-line switch causes
mail.local to exclude -8BITMIME from the list of
features it supports.
220 yourhost LMTP ready ←mail.local sends >>> LHLO yourhost.your.domain ←sendmail sends 250-yourhost ←mail.local sends 250-ENHANCEDSTATUSCODES 250 PIPELINING
Get Sendmail, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.