ngx_mail_smtp_mail   25 src/mail/ngx_mail_smtp_handler.c static ngx_int_t ngx_mail_smtp_mail(ngx_mail_session_t *s, ngx_connection_t *c);
ngx_mail_smtp_mail  444 src/mail/ngx_mail_smtp_handler.c                 rc = ngx_mail_smtp_mail(s, c);