[horde] ActiveSync with Outlook 2016: Collections not PINGable

[Volker Then]

Quoting Arjen de Korte <arjen+horde at de-korte.org>:

> Citeren Volker Then <horde40 at volkerthen.com>:
>
>> Hi,
>>
>> now that I have Outlook 2016 with Horde running, I have already a  
>> problem with the first set-up. IMAP folders and subfolders are not  
>> getting synced with resulting log entries like
>>
>> 539][2018-01-30T14:25:43+01:00] INFO: COLLECTIONS: Initializing  
>> state for collection: Trash, synckey:  
>> {5a705f6b-ae88-431a-9e75-3084ac1f0164}3
>> [539][2018-01-30T14:25:43+01:00] NOTICE: COLLECTIONS: Skipping  
>> F46d058b1 because it is not PINGable.
>>
>> Only things that got synced are Inbox, Calendar, Tasks, Contacts, Notes.
>>
>> Corresponding error messages in the horde.log are only like this:
>>
>> 2018-01-30T14:30:29+01:00 EMERG: HORDE Allowed memory size of  
>> 536870912 bytes exhausted (tried to allocate 603979776 bytes) [pid  
>> 2819 on line 1090 of "/usr/share/php/Math/BigInteger.php"]
>>
>> If I expand the php memory limit, it got exhausted too.
>
> Install the 'bcmath' extension. This will be a requirement in future  
> releases. See  
> https://github.com/horde/Mapi/commit/acf8b124a1e969ab52bc1d17c3b425106de84fa9
>


Thanks Arjen! That fixed it.