Handle internet-style reply-to addresses even if the reply-to net type was not

set.

src/sbbs3/readmail.cpp

@@ -364,7 +364,7 @@ void sbbs_t::readmail(uint usernumber, int which)
 				else if(msg.from_net.type==NET_FIDO) 	/* FidoNet type */
 					SAFEPRINTF2(str,"%s@%s",msg.from
 						,smb_faddrtoa((faddr_t *)msg.from_net.addr,tmp));
-				else if(msg.from_net.type==NET_INTERNET) {
+				else if(msg.from_net.type==NET_INTERNET || strchr((char*)msg.from_net.addr,'@')!=NULL) {
 					if(msg.replyto_net.type==NET_INTERNET)
 						SAFECOPY(str,(char *)msg.replyto_net.addr);
 					else