- By default the web interface sends mail by connecting to the SMTP port of
- 127.0.0.1. You can override this with the smtp_server directive, for
- exampler:
+ By default the web interface sends mail via the system sendmail executable
+ (typically /usr/sbin/sendmail or /usr/lib/sendmail). You can override this
+ with the sendmail directive, for example:
+
+ sendmail /usr/sbin/my-sendmail
+
+ The executable you choose must support the -bs option. Alternatively you
+ can tell it to connect to an SMTP server via TCP, with the smtp_server
+ directive. For example: