SOME senders (send external mail TO the SBS2011) cannot send and get a error after a few days.
Subject: RE: (header)
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On the next addresses message could not be deliverd
user@domain.nl (mailaddress of existing user in SBS2011)
retry timeout exceeded
The strange thing is that when I do a test from <cite>https://www.testexchangeconnectivity.com/</cite>
No error at all. From other external senders no problem at all.
Someone from an internet provider told me that he did a test and that he couldn't telnet to the server (exchange).
Is this right? should this work or is this normal on SBS2011??
I have GFI mailessentials installed but in the logs the mails did not receive nor the exchange log.
Anybody a hint?
regards,
Marc
MarcH