+/** @brief Start a subproces to send a mail message
+ * @param sender Sender address (can be "")
+ * @param pubsender Visible sender address (must not be "")
+ * @param recipient Recipient address
+ * @param subject Subject string
+ * @param encoding Body encoding
+ * @param content_type Content-type of body
+ * @param body Text of body (encoded, but \n for newline)
+ * @return Subprocess PID on success, -1 on error
+ */
+pid_t sendmail_subprocess(const char *sender,
+ const char *pubsender,
+ const char *recipient,
+ const char *subject,
+ const char *encoding,
+ const char *content_type,
+ const char *body) {
+ pid_t pid;
+
+ if(!(pid = fork())) {
+ exitfn = _exit;
+ if(sendmail(sender, pubsender, recipient, subject,
+ encoding, content_type, body))
+ _exit(1);
+ _exit(0);
+ }
+ if(pid < 0)
+ error(errno, "error calling fork");
+ return pid;
+}
+