davmail - UnknownError

[dmarinuswoodwing]

I got a new "UnknownError":

Version 87659a3

2026-04-13 10:04:03,082 ERROR [ImapConnection-47846] davmail  - UnknownError
java.io.IOException: UnknownError
        at davmail.exchange.graph.JsonResponseHandler.handleResponse(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.executeJsonRequest(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getSubFolderByName(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getSubFolderIdIfExists(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getFolderIdIfExists(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getFolderId(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.searchMessages(Unknown Source)
        at davmail.exchange.ExchangeSession.searchMessages(Unknown Source)
        at davmail.exchange.ExchangeSession$Folder.loadMessages(Unknown Source)
        at davmail.imap.ImapConnection.loadFolder(Unknown Source)
        at davmail.imap.ImapConnection.run(Unknown Source)

[mguessan]

Need a bit more lines from your log file, including the actual graph request, please

[dmarinuswoodwing]

Sure, will add those when I re-encounter this error.

[esabol]

Please reopen this issue and stop closing issues before they are actually resolved, @dmarinuswoodwing.

[dmarinuswoodwing]

2026-04-15 14:17:47,060 DEBUG [ImapConnection-48734] davmail  - < BPKD2 CAPABILITY
2026-04-15 14:17:47,060 DEBUG [ImapConnection-48734] davmail  - > * CAPABILITY IMAP4REV1 AUTH=LOGIN MOVE SPECIAL-USE UIDPLUS
2026-04-15 14:17:47,060 DEBUG [ImapConnection-48734] davmail  - > BPKD2 OK CAPABILITY completed
2026-04-15 14:17:47,101 DEBUG [ImapConnection-48734] davmail  - < BPKD3 SELECT Archiveren
2026-04-15 14:17:47,101 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29
2026-04-15 14:17:47,144 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAEIAAA=?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29
2026-04-15 14:17:47,186 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29
2026-04-15 14:17:47,232 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29
2026-04-15 14:17:47,297 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAEIAAA=/childFolders?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29&%24filter=displayName+eq+%27Archiveren%27
2026-04-15 14:17:47,347 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAETAAA=?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29
2026-04-15 14:17:47,395 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29
2026-04-15 14:17:47,440 DEBUG [ImapConnection-48734] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAEIAAA=/childFolders?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27SystemTime+0x3008%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27String+0x3613%27%29&%24filter=displayName+eq+%27Archiveren%27
2026-04-15 14:18:17,450 ERROR [ImapConnection-48734] davmail  - UnknownError
java.io.IOException: UnknownError
        at davmail.exchange.graph.JsonResponseHandler.handleResponse(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.executeJsonRequest(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getSubFolderByName(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getSubFolderIdIfExists(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getFolderIdIfExists(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.isMainCalendar(Unknown Source)
        at davmail.exchange.ExchangeSession.getFolder(Unknown Source)
        at davmail.imap.ImapConnection.run(Unknown Source)
2026-04-15 14:18:17,454 DEBUG [ImapConnection-48734] davmail  - > BPKD3 BAD unable to handle request: UnknownError
2026-04-15 14:18:17,454 INFO  [ImapConnection-48734] davmail.connection  - DISCONNECT - 127.0.0.1:48734

[mguessan]

Ok so the exact same request succeeds 2 lines above so it's not a syntax or permission issue.

I need to optimize code a bit to avoid the double call.

I will also have to add this case to the throttling logic to wait and retry request.

[mguessan]

You may want to try with latest trunk build, I added some code to retry request on 503 Unknown error.

[dmarinuswoodwing]

Version: 1f309ec

2026-04-29 14:08:22,875 DEBUG [ImapConnection-51930] davmail  - < CHPM3 SELECT Archiveren
2026-04-29 14:08:22,875 DEBUG [ImapConnection-51930] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27String+0x3613%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27SystemTime+0x3008%27%29
2026-04-29 14:08:22,929 DEBUG [ImapConnection-51930] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAEIAAA=?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27String+0x3613%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27SystemTime+0x3008%27%29
2026-04-29 14:08:23,018 DEBUG [ImapConnection-51930] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27String+0x3613%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27SystemTime+0x3008%27%29
2026-04-29 14:08:23,070 DEBUG [ImapConnection-51930] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27String+0x3613%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27SystemTime+0x3008%27%29
2026-04-29 14:08:23,120 DEBUG [ImapConnection-51930] davmail.exchange.ExchangeSession  - getSubFolderByName AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAEIAAA= Archiveren
2026-04-29 14:08:23,120 DEBUG [ImapConnection-51930] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAEIAAA=/childFolders?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27String+0x3613%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27SystemTime+0x3008%27%29&%24filter=displayName+eq+%27Archiveren%27
2026-04-29 14:08:23,176 DEBUG [ImapConnection-51930] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/AAMkADU1N2FiYzRmLWVjYzItNDUxYS05YjM4LTA1NDY5NzZkN2VhYQAuAAAAAACC7oeqPYeTTqqLfu_QY67yAQA2V-jgTAFSSqnYgYWQMDRBAAAAAAETAAA=?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27String+0x3613%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27SystemTime+0x3008%27%29
2026-04-29 14:08:23,228 DEBUG [ImapConnection-51930] davmail.exchange.graph.GraphRequestBuilder  - GET https://graph.microsoft.com/beta/me/mailFolders/msgfolderroot?%24expand=singleValueExtendedProperties%28%24filter%3Did+eq+%27String+0x3613%27+or+id+eq+%27SystemTime+0x670a%27+or+id+eq+%27Integer+0x6751%27+or+id+eq+%27SystemTime+0x3008%27%29
2026-04-29 14:08:53,238 ERROR [ImapConnection-51930] davmail  - UnknownError
java.io.IOException: UnknownError
        at davmail.exchange.graph.JsonResponseHandler.handleResponse(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.executeJsonRequest(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getWellKnownFolderId(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getSubFolderIdIfExists(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.getFolderIdIfExists(Unknown Source)
        at davmail.exchange.graph.GraphExchangeSession.isMainCalendar(Unknown Source)
        at davmail.exchange.ExchangeSession.getFolder(Unknown Source)
        at davmail.imap.ImapConnection.run(Unknown Source)
2026-04-29 14:08:53,238 DEBUG [ImapConnection-51930] davmail  - > CHPM3 BAD unable to handle request: UnknownError