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I have an application that emails reports as attachments. it works in all clients' sites except for one. i am using a gmail account there. all the settings are right, outlook express can send email using the same account on the same network. a smtp diagnostic tool also send email, funny thing is our application times out. i used a simple packet capture tool, with the smtp diagnostic tool it shows how a connection to gmail server is being made, but when i am capturing with our application it does not appear to be even attempting to make any connection to the gmail server. process monitor shows its making the connection to the host (aka the server itself) on port 2578. its a windows server 2003 machine hosting the application which was written using VB & .NET 3.5. I am completely at a loss at what to try next. any ideas?
all ports are open, i have checked. and same result on our application with the ISP's email account too.
Thanks.
this application is used by multiple customers in different locations, sorry i probably confused clients/customers . Only on one customer site, this is timing out. Everywhere else it is working fine. i have checked the firewall, antivirus, ports, permission and policies - everything seems to be in order. – Zach Gali – 2013-04-30T15:22:05.837
So to clarify, you have sites. All these sites work except for this one site ? One site the application times out on all units ? Email works on those clients you said. More questions no solutions : How are they maintained ? Are all client sites connected to one server ? Are all client sites on their own ? Are the client sites connected to each other via network, domain or something ? – cyberion1985 – 2013-05-02T08:34:37.453