2193952 - RSOE fails to connect to Relay Server, returning Error writing HTTP headers, errCode:53, sysCode: 4103

Outbound Enabler fails to connect to Relay Server, showing the following:

I. 2015-05-11 14:48:40. iAnywhere Outbound Enabler Version 11.0.1.2913
I. 2015-05-11 14:48:40.
I. 2015-05-11 14:48:40. Copyright © 2011, iAnywhere Solutions, Inc.
I. 2015-05-11 14:48:40. Portions copyright © 2011, Sybase, Inc. All rights reserved.
I. 2015-05-11 14:48:40. Use of this software is governed by the Sybase License Agreement. Refer to http://www.sybase.com/softwarelicenses
I. 2015-05-11 14:48:40.
I. 2015-05-11 14:48:40. Machine ************** is running Windows 2008R2 Build 7601 Service Pack 1
I. 2015-05-11 14:48:40. Software built for X86_64
I. 2015-05-11 14:48:40. Time zone offset from UTC in minutes: -240
I. 2015-05-11 14:48:40. <OEHost> [Outbound Enabler]
I. 2015-05-11 14:48:40. <OEHost> verbosity = 5
I. 2015-05-11 14:48:40. <OEHost> farm = ****
I. 2015-05-11 14:48:40. <OEHost> server_id = ********
I. 2015-05-11 14:48:40. <OEHost> token = !
I. 2015-05-11 14:48:40. <OEHost> backend connect = host=1*.***.209.3;port=2439
I. 2015-05-11 14:48:40. <OEHost> rs connect = host=1*.***.208.139;port=443;https=1;url_suffix=/ias_relay_server/server/rs_server.dll/;trusted_certificates=d:\*********\*********.cer
I. 2015-05-11 14:48:40. <OEHost> reconnect delay = 5
I. 2015-05-11 14:48:40. <OEHost> receive queue limit = 20
I. 2015-05-11 14:48:40. <OEHost>
I. 2015-05-11 14:48:40. <OEMaster> OEMaster thread started..
I. 2015-05-11 14:48:40. <OEMaster> Successfully connected to backend server: 1*.***.209.3:2439
I. 2015-05-11 14:48:40. <OEHost> Successfully connected to the relay server. Retrieving relay servers list..
I. 2015-05-11 14:48:40. <OEHost> Mac address: 0*-**-**-**-**-*5!!
E. 2015-05-11 14:48:41. <OEHost> Error writing HTTP headers, errCode: 53, sysCode: 4103
E. 2015-05-11 14:48:41. <OEMaster> Failed to start, exiting..
I. 2015-05-11 14:48:41. <OEMaster> OEMaster thread stopped..

• Sybase SQL Anywhere 11
• Windows 2008 R2
• IIS 7.5

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