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Yashy
Flag for United Kingdom of Great Britain and Northern Ireland asked on

There was a problem opening your mailbox (after SSL cert has been installed).

Hi guys

I've just recently installed a new SSL certificate for our Exchange 2010 server. People can access the site. However, nobody is able to open attachments. When they try, they are getting what I have attached. Have a look and see. All of the browsers that are trying to open are using IE8 (sadly) as they are our stores and are locked down, but they were able to do all of this before.

Is this DNS related? Is it SSL related?

Thank you for helping
Yash
Picture.jpg
ExchangeSSL / HTTPSWindows Server 2008DNS

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Yashy

8/22/2022 - Mon
Mahesh

can you check what you are getting with google chrome
OR
clear the browser cache on IE 8 and check

IE8 is supported upto exchange 2013
Shreedhar Ette

In IE to Internet Options > Advanced > in the security part untick "Do not save encrypted pages to disk"
Yashy

ASKER
I have tried all of the above and nothing worked sadly.
Experts Exchange has (a) saved my job multiple times, (b) saved me hours, days, and even weeks of work, and often (c) makes me look like a superhero! This place is MAGIC!
Walt Forbes
Yashy

ASKER
Could it be anything to do with IIS settings? I had to make a little change last night and I wonder whether that would be why? Things like unchecking a tick in the SSL or HTTP redirect settings.
Yashy

ASKER
So now, we can't even respond back to emails. When we hit reply, the message body is blank but no cursor for you to be able to type back. So there's evidently something wrong with IIS?
David Favor

Tough to guess about, unless real links are shown.

Best way to debug is to take one of your email + decode the attachments.

My guess is the attachments may be being converted to external links (which are HTTP, rather than HTTPS).

If they attachments are actually inlined (include in the message) there should be no problem.

Fastest debugging will require you email someone an actual email, so they can debug the problem.
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Scott Silva

Did your cert require you to go to TLS 1.2? Is it enabled in your browsers? I don't think IE8 by default was set to support it.

Here are a few test sites.

https://www.ssllabs.com/ssltest/viewMyClient.html
For listing of supported protocols

https://tls1test.salesforce.com/s/
To see if TLS 1.0 was disabled
Yashy

ASKER
I checked TLS 1.2 and still it's got the same issue. I disabled TLS 1.0 and tried and the same thing.

So when I try to compose messages, it just doesn't open up the pop up. When I hit reply to a message, it comes up with the box but no ability to type inside. I've attached the picture of what I'm seeing.
Exchange-store.JPG
Scott Silva

Did you document everything you did adding the new cert? Did you remove the expired cert?
Is time right on server and clients? I recently fired up a laptop that had been sitting for 6 months or so and nothing was working right until I noticed the time was about 30 minutes in the future...

Do you have a newer system to test access with just in case it is IE8 related?
If the systems are locked at IE8 are other updates more current?
Is there a corporate or at least common virus scanner on workstations?
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
William Peck
Yashy

ASKER
Guys, so the bizarre solution in the end was to do the following:

No restarts helped at all in the end.

Resolution:

Install Exchange SP3 and restart the entire server. And hey presto...it worked.

Thank you for your input.
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