Outlook 2016 Pro Plus Digital Signature issue
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in my organization there are 50 clients, circa (Windows 10). On 8-10 of these, there's a single mail account configured with IMAP in Outlook 2016. From 15/10/2018 some emails from inbox automatically keep being sent in Junk Mail without any logical reason. The message shows an error window that tells me that the digital signature is not valid because the message content could have been modified or tampered since it has been sent.
First I thought it was a certificate error, but the certificate is totally valid and expires in 2020. The problem is with the digital signature, but I really don't know what to do. I tried to launch all the Outlook clients in safe mode, but nothing changes. On the web interface of the mail provider, the "junk mails" are correctly displayable (although in junk folder) with the digital signature valid.
The links in the screenshot are in Italian. I've added translation on the right.
windows-10 certificate microsoft-outlook-2016 spam-prevention digital-signature
edited Dec 1 at 3:11
fixer1234
17.7k144581
asked Nov 29 at 15:27
Gabbo
63
add a comment |
up vote
0
down vote
favorite
in my organization there are 50 clients, circa (Windows 10). On 8-10 of these, there's a single mail account configured with IMAP in Outlook 2016. From 15/10/2018 some emails from inbox automatically keep being sent in Junk Mail without any logical reason. The message shows an error window that tells me that the digital signature is not valid because the message content could have been modified or tampered since it has been sent.
First I thought it was a certificate error, but the certificate is totally valid and expires in 2020. The problem is with the digital signature, but I really don't know what to do. I tried to launch all the Outlook clients in safe mode, but nothing changes. On the web interface of the mail provider, the "junk mails" are correctly displayable (although in junk folder) with the digital signature valid.
The links in the screenshot are in Italian. I've added translation on the right.
windows-10 certificate microsoft-outlook-2016 spam-prevention digital-signature
edited Dec 1 at 3:11
fixer1234
17.7k144581
asked Nov 29 at 15:27
Gabbo
63
Does this issue only occur to the IMAP accounts? What's the entire and detailed error message?
– Yuki Sun
Nov 30 at 6:24
Hi, only with IMAP account. I got myself that account both on IMAP and POP on the same PC, same Outlook.
– Gabbo
Nov 30 at 8:40
I'll try to give a link to the screenshot for you to see. It's in italian, so it's probably not very understandable. I've put some kind of transaltion aside. imgur.com/a/bjtMyio
– Gabbo
Nov 30 at 13:21
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
in my organization there are 50 clients, circa (Windows 10). On 8-10 of these, there's a single mail account configured with IMAP in Outlook 2016. From 15/10/2018 some emails from inbox automatically keep being sent in Junk Mail without any logical reason. The message shows an error window that tells me that the digital signature is not valid because the message content could have been modified or tampered since it has been sent.
First I thought it was a certificate error, but the certificate is totally valid and expires in 2020. The problem is with the digital signature, but I really don't know what to do. I tried to launch all the Outlook clients in safe mode, but nothing changes. On the web interface of the mail provider, the "junk mails" are correctly displayable (although in junk folder) with the digital signature valid.
The links in the screenshot are in Italian. I've added translation on the right.
windows-10 certificate microsoft-outlook-2016 spam-prevention digital-signature
edited Dec 1 at 3:11
fixer1234
17.7k144581
asked Nov 29 at 15:27
Gabbo
63
in my organization there are 50 clients, circa (Windows 10). On 8-10 of these, there's a single mail account configured with IMAP in Outlook 2016. From 15/10/2018 some emails from inbox automatically keep being sent in Junk Mail without any logical reason. The message shows an error window that tells me that the digital signature is not valid because the message content could have been modified or tampered since it has been sent.
First I thought it was a certificate error, but the certificate is totally valid and expires in 2020. The problem is with the digital signature, but I really don't know what to do. I tried to launch all the Outlook clients in safe mode, but nothing changes. On the web interface of the mail provider, the "junk mails" are correctly displayable (although in junk folder) with the digital signature valid.
The links in the screenshot are in Italian. I've added translation on the right.
windows-10 certificate microsoft-outlook-2016 spam-prevention digital-signature
windows-10 certificate microsoft-outlook-2016 spam-prevention digital-signature
edited Dec 1 at 3:11
fixer1234
17.7k144581
asked Nov 29 at 15:27
Gabbo
63
edited Dec 1 at 3:11
fixer1234
17.7k144581
asked Nov 29 at 15:27
Gabbo
63
edited Dec 1 at 3:11
fixer1234
17.7k144581
edited Dec 1 at 3:11
fixer1234
17.7k144581
edited Dec 1 at 3:11
fixer1234
17.7k144581
17.7k144581
asked Nov 29 at 15:27
Gabbo
63
asked Nov 29 at 15:27
Gabbo
63
asked Nov 29 at 15:27
Gabbo
63
63
Does this issue only occur to the IMAP accounts? What's the entire and detailed error message?
– Yuki Sun
Nov 30 at 6:24
Hi, only with IMAP account. I got myself that account both on IMAP and POP on the same PC, same Outlook.
– Gabbo
Nov 30 at 8:40
I'll try to give a link to the screenshot for you to see. It's in italian, so it's probably not very understandable. I've put some kind of transaltion aside. imgur.com/a/bjtMyio
– Gabbo
Nov 30 at 13:21
add a comment |
Does this issue only occur to the IMAP accounts? What's the entire and detailed error message?
– Yuki Sun
Nov 30 at 6:24
Hi, only with IMAP account. I got myself that account both on IMAP and POP on the same PC, same Outlook.
– Gabbo
Nov 30 at 8:40
I'll try to give a link to the screenshot for you to see. It's in italian, so it's probably not very understandable. I've put some kind of transaltion aside. imgur.com/a/bjtMyio
– Gabbo
Nov 30 at 13:21
Does this issue only occur to the IMAP accounts? What's the entire and detailed error message?
– Yuki Sun
Nov 30 at 6:24
Does this issue only occur to the IMAP accounts? What's the entire and detailed error message?
– Yuki Sun
Nov 30 at 6:24
Hi, only with IMAP account. I got myself that account both on IMAP and POP on the same PC, same Outlook.
– Gabbo
Nov 30 at 8:40
Hi, only with IMAP account. I got myself that account both on IMAP and POP on the same PC, same Outlook.
– Gabbo
Nov 30 at 8:40
I'll try to give a link to the screenshot for you to see. It's in italian, so it's probably not very understandable. I've put some kind of transaltion aside. imgur.com/a/bjtMyio
– Gabbo
Nov 30 at 13:21
I'll try to give a link to the screenshot for you to see. It's in italian, so it's probably not very understandable. I've put some kind of transaltion aside. imgur.com/a/bjtMyio
– Gabbo
Nov 30 at 13:21
add a comment |
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Does this issue only occur to the IMAP accounts? What's the entire and detailed error message?
– Yuki Sun
Nov 30 at 6:24
Hi, only with IMAP account. I got myself that account both on IMAP and POP on the same PC, same Outlook.
– Gabbo
Nov 30 at 8:40
I'll try to give a link to the screenshot for you to see. It's in italian, so it's probably not very understandable. I've put some kind of transaltion aside. imgur.com/a/bjtMyio
– Gabbo
Nov 30 at 13:21