![]() I think the messages are getting differed because Exchange seems to be instantly timing out once a connection is made which LogMeIn has also It seems to be bouncing back and have also tried disabling Anti-Spam and that didn't seem to make any difference. Senders PC -> Senders ISP -> Random Internet Servers -> ISP's intermediate Server -> My customers Exchange Server -> ISP's intermediate Server -> My customers Exchange Server -> ISP's intermediate Server -> My customers Exchange Server Senders PC -> Senders ISP -> Random Internet Servers -> ISP's intermediate Server -> My customers Exchange Server I have received several MRCA emails as I have ran several tests with everything coming back as ok. What is happening speaking to the guy that monitors that server is he is saying my customers Exchange server is differeing nearly all the email back to the intermediate server, every 15 minutes it trys to send it again with ALL messages coming backīut at random intervals it will let a few go through and some may have been sent 2 hours ago and some 4 days ago. There is an intermediate server that was setup years ago which all the email get routed to then is forwarded to this company's Exchange Running the Microsoft Remote Connectivity Analyzer comes back saying everything is correct with no errors what so ever. I compared it to an email received from the same person 2 weeks ago when the server was running fine and its almost identical. Looking at the message header there doesn't seem to be anything out of the ordinary. I am not sure the 2 are related however both LogMeIn and Exchange seem to have the same problem. I have had to connect anywhere from 2 to 20 times for it to eventually connect. One last note that may help, though everything else seems perfectly normal I did notice connecting via LogMeIn Free connects to the server perfectly but when I click on Remote Control I am met with a Connecting Window followed immediately after with a Disconnect As a last resort and test I asked the ISP to send all those email via the POP connector and 5 minutes later they all come through to theġ person with the job of sorting and forwarding. I have even tried disabling firewall and Anti-Virus protection with no success. I tried doing the same to my local ISP and it give It gives the response 421 4.4.1 Connection timed out, however after about 20 or 30 connects it connects, pressing ENTER gives the response 500 5.5.1 Unrecognized command, trying again times out. I have tried TELNET to the server and it connects every time but when you go to issue a command, even just pressingĮNTER. Internal exchange messages transfer fast, transferring large files to and from the server is fast with no problems. I have tried restarting routers, network switches andĬhecked cable connections. I have looked at DNS, tried restarting the VM, tried shutting down the VM and Hypervisor and restarting the entire server. ![]() It seems about every 2 hours, give or take an hour, 2 or 3 email comes through. ,*,SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions I changed the SMTP Receive logging to Verbose and this is what No settings have been adjusted on the server, network or ISP for several months. Sending email is fast and trouble free, the POP connector is used for 2 ISP based email addresses and works fine. Customer is running SBS2008 virtual machine on a VMware Host with another virtual machine running 2008 Server used for Terminal Services. The ISP collects the email that is then passed onto Exchange kind of like a backup in the event of a power failure. Reported but did notice a LOT of deferred mail coming from my customers Exchange server. Contacting the ISP informs me that there have been no drop outs ![]() Nothing has been done on this server for over a month. Again event logs etc didn't reveal any clues. However I get called up again saying hardly anyone in the organisation are receiving email. Taking a quick look on the server nothing seemed out of the ordinary so dismissed that as an issue with the senders ISP. About a week ago my customer called me telling me it is taking a few hours to receive some email they were expecting.
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