Jay Balakrishna writes:
> Hi All,
> We are trying to find out what is the most efficient way of queueing the
> message in qmail from our C Programs. So, would like to know if there are
> any C API's that are available for queuing messages. Basically I am looking
> for library routines that act as the native submission interface(API) for
> qmail.
The standard Unix API is to popen sendmail and give it the 't' option.
qmail supports that API, although qmail's native submission mechanism
is to popen /var/qmail/bin/qmail-inject with the appropriate options.
For maximum efficiency and security, create your own envelope and
canonical set of headers, fork a copy of qmail-queue and throw them
down the two file descriptors.
Your program could do exactly the same thing that qmail-queue does,
except that qmail-queue has been very carefully to protect internal
security. If you're not worried about internal security, then you
might want to write some code that does exactly what qmail-queue
does. Also, qmail-queue is a documented interface and will be
preserved from version to version of qmail. The queue internals are
likely to change drastically.
--
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