Hi Tim
No, ICMP is not being blocked. At least not on the IMAP server side.
Yes, IPv6 in use, but the affected customer mostly don't use IPv6 and
don't use mobile networks.
But since we increased to 50 connections per user+ip the complaints are
almost gone.
As I understand, Outlook 2016 opens
On 07/08/2020 19:31, Brandon Long via mailop wrote:
Anyways, the point of my story is that it may not be a change to
Outlook at all, but a Windows networking change or maybe just more
network flakiness among your customers or even your own network (less
likely).
I wonder if the original
>From my memory, Outlook would keep two connections open, one kind of
"background / new mail" one, and one for the open folder.
Our experience was that there were cases where flakey tcp paths could lead
to long times for connections to die, though we were seeing it more with
macbooks and apple
Hi Gang
We use DoveCot as IMAP Server and have limited the number of
connections per IMAP account to 20 which looks to have been sufficient
in the past couple of years.
Since about two weeks we get an increased number of users complaining
about IMAP connections problem and name (0x8...) error
