[horde] [Tickets #14550] Re: Active sync via outlook resulting in memory exhausted

Wed Feb 1 19:18:52 UTC 2017

Quoting Porter Rawls <prrawls at bastmail.net>:

> For what its worth i have this same issue on one of my email boxes  
> with 10880 messages in it.  I;ve tried to increase the php memory in  
> the php.ini file, (up to 1GB) but no avail all the memory is  
> consumed.  I just have to use the web client to use that mailbox.  
>  It seems (i think) that outlooks tries and enumerate all the emails  
> in the mailbox before a sync and this causes a out of memory  
> condition on the server.  Don't know if this is a "bug" or outlook  
> just being outlook...

Thanks for the feedback.

This isn't how EAS works though. The only time EVERY email message in  
a mailbox is listed is during the first few syncs (and we split this  
up in ordder to avoid exactly the type of issue you describe).

However, depending on the IMAP server capabilities we must store in  
the database backend either the list of email UIDs OR a list of UIDs  
together with flag information for every message. Perhaps in your case  
loading this data is what the server is hitting up against.

The original report indicates a code path that is only reached for  
certain types of attachments (TNEF or DAT).

> Quoting Michael J Rubinsky <mrubinsk at horde.org>:
>
>> Quoting Michael Klein <Michael.Klein at hypaerion.net>:
>>
>>> Hmm,
>>>
>>> I think it is related to some old mails I have send that include  
>>> attachments...
>>>
>>> Here is an example.. The attachment is bigger than 10 MB. I know  
>>> that active sync always had issues with sending these big files.  
>>> What is interesting is that now I also have issues with syncing  
>>> these mails.
>>
>> This email syncs perfectly fine on all my test devices.
>>
>> Additionally, there is nothing in this email that would have  
>> triggered the code where the memory exhaustion was logged in your  
>> original report.
>>
>>> Hope this is finally the mail that is causing the issue..
>>
>> <SNIP link to email file>
>>
>>> -----Original Message-----
>>> From: noreply at bugs.horde.org [mailto:noreply at bugs.horde.org]
>>> Sent: Montag, 23. Januar 2017 22:24
>>> To: michael.klein at hypaerion.net
>>> Subject: [Tickets #14550] Re: Active sync via outlook resulting in  
>>> memory exhausted
>>>
>>> DO NOT REPLY TO THIS MESSAGE. THIS EMAIL ADDRESS IS NOT MONITORED.
>>>
>>> Ticket URL: https://bugs.horde.org/ticket/14550
>>> ------------------------------------------------------------------------------
>>> Ticket             | 14550
>>> Updated By         | Michael Rubinsky <mrubinsk at horde.org>
>>> Summary            | Active sync via outlook resulting in memory exhausted
>>> Queue              | Horde Framework Packages
>>> Type               | Bug
>>> State              | No Feedback
>>> Priority           | 2. Medium
>>> Milestone          |
>>> Patch              |
>>> Owners             | Michael Rubinsky
>>> ------------------------------------------------------------------------------
>>>
>>> Michael Rubinsky <mrubinsk at horde.org> (2017-01-23 21:23) wrote:
>>>
>>>> I think i nailed it down... Looks like a whole bunch of mails which
>>>> ran throu a yahoo group some very long time ago were the rootcause..
>>>>
>>>> i send you one example via mail.
>>>
>>> The sample email is sync'd with no issues to all of my test  
>>> clients - including Outlook. No display issues and no out of  
>>> memory issues.
>>> Additionaly, the email you sent me did not contain any TNEF or DAT  
>>> attachments, which is the ONLY way the code where the memory  
>>> exhaustion occurred would have been called.
>>>
>>>>>> I have removed the mail from the trash.. Still the error occurres. I
>>>>>> have pulled a new report under the same address as before. As this
>>>>>> mail was related to a calendar entry, do you think it might be
>>>>>> related to the entry in the calendar?
>>>>>
>>>>> Yes, meeting requests are sometimes sent as TNEF or DAT file
>>>>> attachments from Outlook.
>>>>>
>>>>>>>> I have setup a new sync with a new device. But the only thing i
>>>>>>>> see until the
>>>>>>>>
>>>>>>>> HORDE[5838]: Allowed memory size of 134217728 bytes exhausted
>>>>>>>> (tried to allocate 150994944 bytes) [pid 5838 on line 1090 of
>>>>>>>> "/usr/share/php/Math/BigInteger.php"]
>>>>>>>
>>>>>>> You should be looking at the sync log, not the horde log and should
>>>>>>> see a LOT more than this.
>>>>>>>
>>>>>>>> Can i send you the log file so you can have a look? I really can
>>>>>>>> not find anything :-(
>>>>>>>
>>>>>>> You can send me the sync log, yes but I will also probably need an
>>>>>>> email that triggers this. As I said, it's most likely an email with
>>>>>>> a TNEF or *.DAT file attachment.
>>
>> --
>> mike
>> The Horde Project
>> http://www.horde.org
>> https://www.facebook.com/hordeprojecthttps://www.twitter.com/hordeproject
> -- 
> - Porter

-- 
mike
The Horde Project
http://www.horde.org
https://www.facebook.com/hordeproject
https://www.twitter.com/hordeproject
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