BOOL af_pass_message:1; /* pass message in bounces */
BOOL af_bad_reply:1; /* filter could not generate autoreply */
BOOL af_tcp_fastopen_conn:1; /* delivery connection used TCP Fast Open */
- BOOL af_tcp_fastopen:1; /* delivery usefuly used TCP Fast Open */
+ BOOL af_tcp_fastopen:1; /* delivery usefully used TCP Fast Open */
+ BOOL af_pipelining:1; /* delivery used (traditional) pipelining */
#ifndef DISABLE_PRDR
BOOL af_prdr_used:1; /* delivery used SMTP PRDR */
#endif