EF_NORECEIPT (reference) in projects: freebsd

1272 	{ "NORECEIPT",		EF_NORECEIPT	},

1199 #define EF_NORECEIPT	0x00010000L	/* suppress all return-receipts */  macro

8181 	ee->e_flags |= EF_NORECEIPT;	/* XXX really? */

/freebsd/contrib/sendmail/src/
H A D	envelope.c	`1272 { "NORECEIPT", EF_NORECEIPT },`
H A D	headers.c	`1923 (RrtImpliesDsn \|\| bitset(EF_NORECEIPT, e->e_flags)))`
H A D	sendmail.h	`1199 #define EF_NORECEIPT 0x00010000L /* suppress all return-receipts */ macro`
H A D	deliver.c	`506 ee->e_flags \|= EF_NORECEIPT; 591 e->e_flags \|= EF_NORECEIPT;`
H A D	queue.c	`8181 ee->e_flags \|= EF_NORECEIPT; /* XXX really? */`