Error: An established connection was aborted by the software in your host machine.
Posted on 2009-05-02
I have a VB ASP.net (3.5) app that communicates via sockets on port 25 to an SMTP server. The 2 machines are on a company domain on the same LAN. I manually build MIME messages. I get the above error when sending large (approx 2 megabyte) messages. I do not get the error when sending smaller messages. Other notes:
- I am sending from W2K3 SBS, IIS v 7. process to another W2K3 SBS machine.
- Also tried it on my network, from XP Pro, IIS 5.1 (?) to W2K3 SBS machine.
- The Idle timeout was set to 90 minutes. The error occurs after roughly 25 minutes.
- On my network I have Norton Antivirus on the XP machine. The client network (2003 to 2003) does not have antivirus. The NAV log showed no blocking activity during the time I got the errors.
What is causing this error? Is there a way to do a trace or something to get a better message?