Remote(socket error) specifically means the remote socket did not acknowledge a packet. I'd focusing my efforts on the LOB app. Hopefully it has extended logging of some type.
> On Dec 18, 2014, at 18:42, "James Hill" <[email protected]> wrote: > > Hmm.. I can’t see it there Michael. Here is the log:- > > 2014-12-18T23:17:34.874Z,SERVER\AppRelay,08D1E88C8D1C474A,30,192.168.2.21:25,192.168.2.103:52572,>,250 > 2.1.5 Recipient OK, > 2014-12-18T23:17:34.890Z, SERVER > \AppRelay,08D1E88C8D1C474A,31,192.168.2.21:25,192.168.2.103:52572,<,DATA, > 2014-12-18T23:17:34.890Z,SERVER\AppRelay,08D1E88C8D1C474A,32,192.168.2.21:25,192.168.2.103:52572,>,354 > Start mail input; end with <CRLF>.<CRLF>, > 2014-12-18T23:18:43.656Z,SERVER\AppRelay,08D1E88C8D1C474A,33,192.168.2.21:25,192.168.2.103:52572,-,,Remote(SocketError) > > James. > > From: [email protected] [mailto:[email protected]] > On Behalf Of Michael B. Smith > Sent: Friday, 19 December 2014 12:29 PM > To: [email protected] > Subject: [Exchange] RE: Exchange 2013 application relay issue > > You need to know which socketerror it is. If you enable verbose logging on > the connector, the error number is one of the fields. > > From: [email protected] [mailto:[email protected]] > On Behalf Of James Hill > Sent: Thursday, December 18, 2014 7:55 PM > To: [email protected] > Subject: [Exchange] Exchange 2013 application relay issue > > I’m currently investigating an issue for a client with Exchange 2013. They > have a single Exchange 2013 SP1 server running in a 2012 R2 VM on 2012 R2 > Hyper-V Host. > > I have configured a receive connector (Apprelay) that allows their LOB app (a > payroll program) to send out emails. > > From time to time the LOB app crashes while attempting to send out emails via > the Apprelay connector. After restarting the LOB app it still isn’t able to > send emails. However, restarting the Exchange Transport service temporarily > resolves the issue. > > When it fails the SMTP log on the exchange server shows a socket error:- > > 250 2.1.5 Recipient OK > DATA > 354 Start mail input; end with <CRLF>.<CRLF> > Remote(SocketError) > > I’m not sure where to look for the cause from here. Network layer? > Suggestions please? > > James.
