#define WAIT_NAME_MAX 50
+/* Wait this long before determining that a Proxy Protocol configured
+host isn't speaking the protocol, and so is disallowed. Can be moved to
+runtime configuration if per site settings become needed. */
+#ifdef EXPERIMENTAL_PROXY
+#define PROXY_NEGOTIATION_TIMEOUT_SEC 3
+#define PROXY_NEGOTIATION_TIMEOUT_USEC 0
+#endif
+
/* Fixed option values for all PCRE functions */
#define PCRE_COPT 0 /* compile */
#define LX_unknown_in_list 0x81000000
#define LX_8bitmime 0x82000000
#define LX_smtp_mailauth 0x84000000
+#define LX_proxy 0x88000000
#define L_default (L_connection_reject | \
L_delay_delivery | \
#define ERRNO_RCPT4XX (-44) /* RCPT gave 4xx error */
#define ERRNO_MAIL4XX (-45) /* MAIL gave 4xx error */
#define ERRNO_DATA4XX (-46) /* DATA gave 4xx error */
+#define ERRNO_PROXYFAIL (-47) /* Negotiation failed for proxy configured host */
/* These must be last, so all retry deferments can easily be identified */