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Yeah, I am trying to use (port 587) instead, based on email rejects from many companies 
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Yeah, I am trying to use (port 587) instead, based on email rejects from many companies

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Will those other companies accept email on a non-standard port? &nbsp;Based on my experience they usually won't.
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Will those other companies accept email on a non-standard port?  Based on my experience they usually won't.

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What do you think about using an SMTP Connector (in Exchange Server) to Relay Outbound Email Through ISP?
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What do you think about using an SMTP Connector (in Exchange Server) to Relay Outbound Email Through ISP?

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Configure ISA Server 2004 to allow outbound traffic on a non-standard SMTP port 587<br />

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Configure ISA Server 2004 to allow outbound traffic on a non-standard SMTP port 587


MS ISA 2004 Server Port 587 configuration

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.