Exchange 2007 - email client connectiion is being blocked WSAEWOULDBLOCK
Hi..
I have custom email client that used to work fine connecting - to previous versions of Exchange.
With Exch 20007 the client connection is blocked and returns a windows socket error of WSAEWOULDBLOCK. Outlook 2007 connects fine. I tried using port 135 too...
How can Outlook connect and a winodow socket program can not. Any ideas?
thanks
I have custom email client that used to work fine connecting - to previous versions of Exchange.
With Exch 20007 the client connection is blocked and returns a windows socket error of WSAEWOULDBLOCK. Outlook 2007 connects fine. I tried using port 135 too...
How can Outlook connect and a winodow socket program can not. Any ideas?
thanks
ASKER
It's written in C# using Microsoft .Net System.Net.Mail..... you specify the SMTP server and port and user / passs
Outlook could sent mail without use SMTP protocol. To send emails by SMTP you need that Exchange Server have the SMTP port listening. Check it : telnet <Ip server> 25 / telnet <Ip server> 465 (SMTPs)
If it not close the socket:
EMC: Server Configuration: Hub Transport, select your server and create a Receive Connectors
If it not close the socket:
EMC: Server Configuration: Hub Transport, select your server and create a Receive Connectors
Possibly The windows firewall knows about Outlkook and you need to add and exception for your program. Could be other firewalls or anti virus.
ASKER
Telnet did not work... just hung..
The workstation has the firewall off.
How can the Exchange server know that the 'request' is coming from Outlook and block everything else...is that a firewall issue?
The workstation has the firewall off.
How can the Exchange server know that the 'request' is coming from Outlook and block everything else...is that a firewall issue?
If you are using Outlook using MAPI thats a different protocol to SMTP and port 25 and uses different ports. SO exchange can tell by the ports you use. SO Exchange can be configured
if you hjave McAfee installed that will block access to Port 25. What other protection software is installed on the PC? Norton, McAfee?
if you hjave McAfee installed that will block access to Port 25. What other protection software is installed on the PC? Norton, McAfee?
ASKER
I uninstalled Trend Micro.. so no virus scan software in on it. The setting in Outlook just have the name of the Exch Server.
not sure whats going on. Can you post a snapshot of the dialog that has the exchange server name..
sorry I meant the outlook dialog box with the exchange server name in...
ASKER
It's just the standard Outlook setting screen when connecting to exchange.. with a text box for Microsoft Exchange Server
ASKER
Looks like the windows network user/pass is 'tied' to the Exchange Server....
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
MAPI requires "all ports".
WebDav requires TCP 80 or 443.
EWS requires TCP 443.