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Performance Issue: Certificate Issue with Some Thunderbird or Other Email Apps Using IMAP

Last Updated:
2019-03-04 12:31:10
Event:
2019-02-25 08:45:00
Status:
Closed
Brief Description:
CIT has received reports that some Thunderbird and other email app configurations are experiencing certificate warnings for IMAP connections. This issue can be fixed by using the outlook.office365.com IMAP server.
User Impact:
Certificate warnings are appearing for some Thunderbird and other email application configurations that have been set to use IMAP servers other than outlook.office365.com.
Workaround:
This issue can be fixed by using the outlook.office365.com IMAP server. For details, see https://it.cornell.edu/facstaff-email/choose-which-emailcalendar-app-use-office-365#section-5 , under "Other Ways to Manage Your Cornell Email: For IMAP."
Current Status:
The issue has also affected other setups beyond Thunderbird, such as some individuals accessing EGAs using their smartphones. It could potentially affect other IMAP or POP configurations. Changing the server setting to outlook.office365.com will fix the warnings.
Services Affected:
Email and Calendar
Subsites Affected:
Faculty/Staff Email (Office 365)
Student Email (Cmail)
Full Description:
CIT has received reports that some Thunderbird and other email app setups are experiencing certificate warnings for IMAP connections. This issue can be fixed by using the outlook.office365.com IMAP server. For details, see https://it.cornell.edu/facstaff-email/choose-which-emailcalendar-app-use-office-365#section-5 , under "Other Ways to Manage Your Cornell Email: For IMAP." Note: imap-mail.outlook.com also works and is what appears as the server name when the account is auto-configured.



Timeline of Changes

Description Current Status Date Time
CIT has received reports that some Thunderbird and other email app setups are experiencing certificate warnings for IMAP connections. This issue can be fixed by using the outlook.office365.com IMAP server. For details, see https://it.cornell.edu/facstaff-email/choose-which-emailcalendar-app-use-office-365#section-5 , under "Other Ways to Manage Your Cornell Email: For IMAP." Note: imap-mail.outlook.com also works and is what appears as the server name when the account is auto-configured. The issue has also affected other setups beyond Thunderbird, such as some individuals accessing EGAs using their smartphones. It could potentially affect other IMAP or POP configurations. Changing the server setting to outlook.office365.com will fix the warnings. 2019-02-25 15:16:21
CIT has received reports that some Thunderbird email applications are experiencing certificate warnings for IMAP connections. This issue can be fixed by using the outlook.office365.com IMAP server. For details, see https://it.cornell.edu/facstaff-email/choose-which-emailcalendar-app-use-office-365#section-5 , under "Other Ways to Manage Your Cornell Email: For IMAP." Note: imap-mail.outlook.com also works and is what appears as the server name when the account is auto-configured. Certificate warnings are appearing for some Thunderbird email applications set to use IMAP servers other than outlook.office365.com. 2019-02-25 09:45:18
CIT has received reports that some Thunderbird email applications are experiencing certificate warnings for IMAP connections. This issue can be fixed by using the outlook.office365.com IMAP server. For details, see https://it.cornell.edu/facstaff-email/choose-which-emailcalendar-app-use-office-365#section-5 , under "Other Ways to Manage Your Cornell Email: For IMAP." Certificate warnings are appearing for some Thunderbird email applications set to use IMAP servers other than outlook.office365.com. 2019-02-25 09:11:23