fix: bump deps, fix mx error logs (#482)

* bump deps

* bump deps, fix mxConnect error handling

Author: NickOvt

lib/sender.js

@@ -1242,8 +1242,8 @@ class Sender extends EventEmitter {
             mxConnect(mxOptions, (err, mx) => {
                 if (err) {
                     // could not connect to MX
-                    let remoteHost = err.mxHost || err.host || err.address;
-                    let remotePort = err.mxPort || err.port || delivery.mxPort || this.zone.port || 25;
+                    let remoteHost = delivery.domain;
+                    let remotePort = delivery.mxPort || this.zone.port || 25;
 
                     log.error(
                         this.logName,