Running SM 16, build 7236 (latest as at writing).
Problem with calendar appointments in Outlook being fed the wrong timezone info when an appointment is created in webmail.
A couple of users for a customer are responsible for setting up calendar appointments and inviting people. They use webmail to do this, as that's the only place that works property when inviting attendees.
When an event is created and the invite is sent out via webmail, a recipient (in the same company, so also using Smartermail) with Outlook interprets it as being sent from a different timezone so moves the meeting two hours into the future and puts it in the recipients calendar "greyed out" as being 4.30pm. There is a notice in the Outlook appointment window, below please respond, saying
"This meeting has been adjusted to reflect your current timezone. It was initially created in the following timezone: Pacific/Auckland."
I've been able to replicate the problem on my machine & my mailbox.
Everyone on a Windows machine has timezone is set to "(UTC+12) Auckland, Wellington".
Mac user has timezone set UTC+12 Wellington.
The Smartermail settings for each person's mailbox has timezone set UTC+12 Auckland, Wellington.
The server's (Windows 2016) timezone is set as (UTC+12) Auckland, Wellington
But Outlook seems to be getting this Pacific/Auckland interpretation as being "not UTC+12" and for whatever reason, suggesting the appointment is 2 hours behind.
I've had a thorough Google search. I'm stumped. I don't think it's DST issue as DST is set automatically everywhere (though NZ is currently observing DST so we're currently UTC+13 NZDT, instead of UTC+12 NZST)
The SmarterMail self diagnostic page reports
OS Time Zone - (UTC+12:00) Auckland, Wellington
It is not really a solution to ask every user to change their Outlook settings to label the timezone Pacific/Auckland. You can't ask people you don't know to change the timezone label settings in Outlook, prior to receiving a meeting invite from one of your customers, but that's the only thing I can think of. Somehow force Outlook to re-interpret the timezone rules to say "Pacific/Auckland" = "Auckland, Wellington"
Could someone else try reproducing this in another timezone please?