K-9 Mail unable to receive mails from 126

Support
1

What are you trying to accomplish?
Receive emails from 126 mail.
What have you tried so far?
Change almost everything related to account in the setting
What K-9 Mail version are you using?
6.400
What Android version and device are you using?
Android 12, Pixel 4.

Screenshot_20221204-142630_K-9 Mail_1
Screenshot_20221204-142630_K-9 Mail_11080×2041 30.9 KB

2

Screenshot_20221204-142756_FairEmail_11
Screenshot_20221204-142756_FairEmail_111080×2041 215 KB

So my email box is not empty. And on the computer, the kmail from KDE also works well.

3

Here is the log from k-9 mail:
12-04 14:40:26.252 7651 7671 E RealImapFolder: Unable to open connection for 51cb515b-4adb-4d70-8256-cbd026613e83:INBOX/MessagingController/conn223192082
12-04 14:40:26.252 7651 7671 E RealImapFolder: com.fsck.k9.mail.store.imap.NegativeImapResponseException: Command: EXAMINE “INBOX”; response: #6# [NO, EXAMINE Unsafe Login. Please contact kefu@188.com for help]
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.mail.store.imap.ImapResponseParser.readStatusResponse(ImapResponseParser.java:119)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.mail.store.imap.RealImapConnection.executeSimpleCommand(RealImapConnection.kt:697)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.mail.store.imap.RealImapConnection.executeSimpleCommand(RealImapConnection.kt:683)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.mail.store.imap.RealImapFolder.executeSimpleCommand(RealImapFolder.kt:84)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.mail.store.imap.RealImapFolder.internalOpen(RealImapFolder.kt:118)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.mail.store.imap.RealImapFolder.open(RealImapFolder.kt:89)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.backend.imap.ImapSync.synchronizeMailboxSynchronous(ImapSync.kt:81)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.backend.imap.ImapSync.sync(ImapSync.kt:34)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.backend.imap.ImapBackend.sync(ImapBackend.kt:55)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController.syncFolder(MessagingController.java:616)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController.synchronizeMailboxSynchronous(MessagingController.java:556)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController.lambda$synchronizeMailbox$3(MessagingController.java:528)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController.$r8$lambda$ar_6eNiqt1c67rfo1nCyGoIX3Sg(Unknown Source:0)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController$$ExternalSyntheticLambda20.run(Unknown Source:10)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController.runInBackground(MessagingController.java:222)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController.access$000(MessagingController.java:108)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at com.fsck.k9.controller.MessagingController$1.run(MessagingController.java:163)
12-04 14:40:26.252 7651 7671 E RealImapFolder: at java.lang.Thread.run(Thread.java:920)
12-04 14:40:26.252 7651 7671 E ImapSync: synchronizeMailbox
12-04 14:40:26.252 7651 7671 E ImapSync: com.fsck.k9.mail.store.imap.NegativeImapResponseException: Command: EXAMINE “INBOX”; response: #6# [NO, EXAMINE Unsafe Login. Please contact kefu@188.com for help]
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.mail.store.imap.ImapResponseParser.readStatusResponse(ImapResponseParser.java:119)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.mail.store.imap.RealImapConnection.executeSimpleCommand(RealImapConnection.kt:697)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.mail.store.imap.RealImapConnection.executeSimpleCommand(RealImapConnection.kt:683)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.mail.store.imap.RealImapFolder.executeSimpleCommand(RealImapFolder.kt:84)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.mail.store.imap.RealImapFolder.internalOpen(RealImapFolder.kt:118)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.mail.store.imap.RealImapFolder.open(RealImapFolder.kt:89)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.backend.imap.ImapSync.synchronizeMailboxSynchronous(ImapSync.kt:81)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.backend.imap.ImapSync.sync(ImapSync.kt:34)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.backend.imap.ImapBackend.sync(ImapBackend.kt:55)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController.syncFolder(MessagingController.java:616)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController.synchronizeMailboxSynchronous(MessagingController.java:556)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController.lambda$synchronizeMailbox$3(MessagingController.java:528)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController.$r8$lambda$ar_6eNiqt1c67rfo1nCyGoIX3Sg(Unknown Source:0)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController$$ExternalSyntheticLambda20.run(Unknown Source:10)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController.runInBackground(MessagingController.java:222)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController.access$000(MessagingController.java:108)
12-04 14:40:26.252 7651 7671 E ImapSync: at com.fsck.k9.controller.MessagingController$1.run(MessagingController.java:163)
12-04 14:40:26.252 7651 7671 E ImapSync: at java.lang.Thread.run(Thread.java:920)
12-04 14:40:26.256 7651 7671 E ImapSync: Failed synchronizing folder ybx333:INBOX @ 周日 12月 04 14:40:26 GMT+08:00 2022

4

Solution is here. Contact their support and ask, what security settings are required for IMAP examine on your inbox.

1 Like
5

Thanks! Now I will contact their support to find out what happened.

6

I found that they will check the IMAP ID and they give an example on how to provide it:
Properties props = new Properties();
props.setProperty(“mail.store.protocol”, “imap”);
props.setProperty(“mail.imap.host”, “imap.163.com”);
props.setProperty(“mail.imap.port”, “143”); HashMap IAM = new HashMap
();
//Provide IMAP ID information, which is consist of key and value，such as name，version，vendor，support-email, etc…
IAM.put(“name”,“myname”);
IAM.put(“version”,“1.0.0”);
IAM.put(“vendor”,“myclient”);
IAM.put(“support-email","testmail@test.com”);

Session session = Session.getInstance(props);
IMAPStore store = (IMAPStore) session.getStore(“imap”);