Added support for SMTP AUTH via IP toggle option (defaults to OFF) - this

option must be enabled to allow POP-before-SMTP type authentication.

src/sbbs3/mailsrvr.h

@@ -110,6 +110,7 @@ typedef struct {
 #define MAIL_OPT_DNSBL_IGNORE		(1<<16) /* Dump mail, return success */
 #define MAIL_OPT_DNSBL_BADUSER		(1<<17) /* Refuse mail (bad user name) */
 #define MAIL_OPT_DNSBL_DEBUG		(1<<20) /* Debug DNSBL activity */
+#define MAIL_OPT_SMTP_AUTH_VIA_IP	(1<<21)	/* Allow SMTP authentication via IP */
 #define MAIL_OPT_NO_RECYCLE			(1<<27)	/* Disable recycling of server		*/
 #define MAIL_OPT_LOCAL_TIMEZONE		(1<<30)	/* Don't force UTC/GMT */
 #define MAIL_OPT_MUTE				(1<<31)

src/sbbs3/sbbs_ini.c

@@ -114,6 +114,7 @@ static ini_bitdesc_t mail_options[] = {
 	{ MAIL_OPT_USE_TCP_DNS			,"USE_TCP_DNS"			},
 	{ MAIL_OPT_NO_SENDMAIL			,"NO_SENDMAIL"			},
 	{ MAIL_OPT_ALLOW_RELAY			,"ALLOW_RELAY"			},
+	{ MAIL_OPT_SMTP_AUTH_VIA_IP		,"SMTP_AUTH_VIA_IP"		},
 	{ MAIL_OPT_DNSBL_REFUSE			,"DNSBL_REFUSE"			},
 	{ MAIL_OPT_DNSBL_IGNORE			,"DNSBL_IGNORE"			},
 	{ MAIL_OPT_DNSBL_BADUSER		,"DNSBL_BADUSER"		},