extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
extern int bsmtp_transaction_linecount; /* Start of last transaction */
+extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */