SMTP

SMTP

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Enable SMTP (prior to V8.12)

tune with confENVDEF

Prior to V8.12, if you were running sendmail as a daemon, you needed to define SMTP to enable mail transfers. If you didn't intend to run sendmail as a daemon, SMTP did not need to be defined. The default was that SMTP was automatically defined if either NETINET or NETISO was defined; otherwise , SMTP was undefined.

Beginning with V8.12, the SMTP compile-time macro has been deprecated and removed. It is now impossible to exclude SMTP support from sendmail .

If a precompiled sendmail lacks SMTP support, an attempt to use sendmail 's -bs command-line switch will result in this fatal error:

 I don't speak SMTP 

SMTP activity can be watched with the -v command-line switch (-v).