Outlook account unable to send/receive

[#1]

I have a number of Outlook email accounts using force9. 

One of the accounts cannot send/receive. All the other accounts are working fine. 

I have tried deleting and recreating the account using the recommended settings and it still doesn't work. I am using the same settings for the other working acciounts. 

Webmail for the failing account is working. 

What can I try next?

[#2]

Can you please run the email server connection diagnostics - see the link below.

What credentials are you using to connect - email address or user account?

[#3]

Hello, 

I have tried the server disgnostice and get the following results:

* Host imap.force9.net:993 was resolved.
* IPv6: (none)
* IPv4: 91.204.208.196
*   Trying 91.204.208.196:993...
* schannel: disabled automatic use of client certificate
* schannel: next InitializeSecurityContext failed: CRYPT_E_NO_REVOCATION_CHECK (0x80092012) - The revocation function was unable to check revocation for the certificate.
* closing connection #0
curl: (35) schannel: next InitializeSecurityContext failed: CRYPT_E_NO_REVOCATION_CHECK (0x80092012) - The revocation function was unable to check revocation for the certificate.

[#4]

I am using an email addrerss to log in. 

[#5]

Are you using AVG or Norton AV?

[#6]

This is the configuration in Outlook:

IMAP configuration

Hostname

imap.force9.net

Port

993

Secure connection type

None

SMTP configuration

Hostname

relay.force9.net

Port

587

Secure connection type

None

[#7]

I am using Norton AV

[#8]

I have just tried again, having read the instructions moe carefully. I now get these results:

PS C:\Users\les> curl.exe -v imaps://imap.force9.net -u [Removed]
Enter host password for user ' [Removed]':
* Host imap.force9.net:993 was resolved.
* IPv6: (none)
* IPv4: 91.204.208.196
*   Trying 91.204.208.196:993...
* schannel: disabled automatic use of client certificate
* schannel: next InitializeSecurityContext failed: CRYPT_E_NO_REVOCATION_CHECK (0x80092012) - The revocation function was unable to check revocation for the certificate.
* closing connection #0
curl: (35) schannel: next InitializeSecurityContext failed: CRYPT_E_NO_REVOCATION_CHECK (0x80092012) - The revocation function was unable to check revocation for the certificate.

Moderators Note: Personal information removed

[#9]

The certificate revocation error is the issue.  It’s been seen in association with both AVG and Norton AV.

Somewhere around here there’s a mitigation reported in association with AVG.  It’s all connected with their “man in the middle” fiddling with the certificates.

I am out and searching from the phone is tedious.

[#10]

No problem. 

I'll catch up in the morning.

[#11]

Magically, the account came back on-line this morning without any further intervention.

I guess we can close this off.