For months this problem now eats our resources.
We would really appreciate to find a solution for this.

Hello,

• Could you do the same as here https://github.com/mailcow/mailcow-dockerized/issues/5045#issuecomment-1615833182 and add SOGoEASDebugEnabled = YES to your sogo.conf, wait for the problem to appear and give us the log? (by default /var/log/sogo/sogo.log)
• And also what version of iOS do you have?

Yes, the bug is identically to mentioned comment.

mailcowdockerized-sogo-mailcow-1       | Oct 25 14:49:47 4991662df76e sogod [57]: <0x0x56383afe8b40[SOGoActiveSyncDispatcher]> EAS - request for device 72T5A34GMH0MP16ASAC83JT8UG: <?xml version="1.0"?>
mailcowdockerized-sogo-mailcow-1       | Oct 25 14:49:47 4991662df76e syslog-ng[11]: Error processing log message: <!DOCTYPE ActiveSync PUBLIC "-//MICROSOFT//DTD ActiveSync//EN" "http://www.microsoft.com/">
mailcowdockerized-sogo-mailcow-1       | <Sync xmlns="AirSync:">
mailcowdockerized-sogo-mailcow-1       |  <Collections>
mailcowdockerized-sogo-mailcow-1       |   <Collection>
mailcowdockerized-sogo-mailcow-1       |    <SyncKey>0</SyncKey>
mailcowdockerized-sogo-mailcow-1       |    <CollectionId>mail%2FShared</CollectionId>

Any news?

I really would appreciate some collaboration.
This Problem eats basically 600% CPU on an 8 Core mailcow docker server only because some people connect with their IOS-Devices.
Connecting IOS Devices basically limits down the whole server for everyone causing not only really high power consumption but also killing the user experience.

If there is anything I can provide to speed up the debug process please tell.
If this is not a SoGo bug please also tell.
The mail server runs for months now on maximum load.

https://github.com/mailcow/mailcow-dockerized/issues/5045#issuecomment-1615833182

Hello,

• Could you do the same as here https://github.com/mailcow/mailcow-dockerized/issues/5045#issuecomment-1615833182 and add SOGoEASDebugEnabled = YES to your sogo.conf, wait for the problem to appear and give us the full logfile? (by default /var/log/sogo/sogo.log)
• And also what version of iOS do you have?

For privacy reasons I can not give you the full log but like already mentioned the logs are as follow:

Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: Jan  9 16:53:11 6454ffe7fa29 syslog-ng[10]: Error processing log message: <Ping xmlns="Ping:">
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  <Status>1</Status>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Ping>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: /HeartbeatInterval>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  <Folders>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   <Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Id>mail%2F349e8a121fa0d4611b200000eb6a2ee8</Id>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Class>Email</Class>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   <Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Id>mail%2F9c212839e01dd76126310000eb6a2ee8</Id>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Class>Email</Class>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   <Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Id>mail%2Fd05fcc211fa0d4611b200000eb6a2ee8</Id>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Class>Email</Class>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   <Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Id>vevent%2Fpersonal</Id>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Class>Calendar</Class>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  </Folders>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Ping>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: s>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Collection>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  </Collections>
Jan 09 16:53:11 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Sync>

follwed by the xml content with private data. Than it repeats again with the line "Error processing log message".

Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: Jan  9 17:05:17 6454ffe7fa29 syslog-ng[10]: Error processing log message: <!DOCTYPE ActiveSync PUBLIC "-//MICROSOFT//DTD ActiveSync//EN" "http://www.microsoft.com/">
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: <Ping xmlns="Ping:">
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  <Status>1</Status>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Ping>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: ", "mail%2Fdb6b2903b25d7864adf923003b3b2f75")
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  '{DAV:}write-content' already exists in DAV permissions table
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: s>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   <Folder>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Id>mail%2F9c212839e01dd76126310000eb6a2ee8</Id>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Class>Email</Class>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   <Folder>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Id>mail%2Fd05fcc211fa0d4611b200000eb6a2ee8</Id>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Class>Email</Class>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   <Folder>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Id>vevent%2Fpersonal</Id>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:    <Class>Calendar</Class>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Folder>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  </Folders>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Ping>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Options>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:   </Collection>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  </Collections>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Sync>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Collection>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]:  </Collections>
Jan 09 17:05:17 mail-host docker/mailcowdockerized-sogo-mailcow-1[959]: </Sync>

This repeats probably as fast as the TLS handshake can get.
Again and again, no more error logs in the debug lvl.

The information needed can be seen in
https://github.com/mailcow/mailcow-dockerized/issues/5045#issuecomment-1912275247

Any news?

Hello,
We haven't forget about this but our (Alinto's) hands are full for now.

Maybe it helps to find out what request is hammering the server... check logs for fast repeating requests:
POST /SOGo/Microsoft-Server-ActiveSync?User=...&DeviceId=....&DeviceType=...&Cmd=... HTTP/1.1" 200

Maybe you can identify a specific DeviceId= and Cmd= causing the load.

Then it might help to see the some examples of the payload of such repeating requests:
EAS - request for device ...: <?xml
and its
EAS - response for device ....: <?xml

May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: May 28 11:31:59 fadc6a0236ba sogod [63]: <0x0x5560b2b0d430[SOGoActiveSyncDispatcher]> EAS - request for device XXX: <?xml version="1.0"?>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: May 28 11:31:59 fadc6a0236ba syslog-ng[10]: Error processing log message: <!DOCTYPE ActiveSync PUBLIC "-//MICROSOFT//DTD ActiveSync//EN" "http://www.microsoft.com/&quot;>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <Sync xmlns="AirSync:">
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <Collections>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <Collection>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <SyncKey>0</SyncKey>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <CollectionId>mail%2FShared</CollectionId>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <Options>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <FilterType>5</FilterType>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <MIMETruncation>1</MIMETruncation>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <MIMESupport>0</MIMESupport>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <BodyPreference xmlns="AirSyncBase:">
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <Type>1</Type>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <TruncationSize>500</TruncationSize>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </BodyPreference>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </Options>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </Collection>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </Collections>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </Sync>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: <Class>Calendar</Class>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </Folder>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </Folders>
May 28 11:31:59 mail-host docker/mailcowdockerized-sogo-mailcow-1[971]: </Ping>

No response this request just comes over and over.

POST /Microsoft-Server-ActiveSync?User=XXX@XXX.com&DeviceId=XXX&DeviceType=iPhone&Cmd=Sync HTTP/2.0" 200 0 "-" "Apple-iPhone16C1/2105.236

This spams over and over again.
With direct disconnect after it than it connects back again and disconnects directly after it.
Again and again and again and again.

maild on apple phone says:

"Folder item sync task 0x500988280 is using key (null) for folder mail%2FShared"

This aligns to the above error message.