We have the same problem here, people with large mailboxes using EAS with Outlook 2013 have issues with initial sync being slow, some mails never even show up in Outlook and the same goes for the calendar, some events never sync. The same people are using EAS on their Android phones and it's working fine there.
Right now I too recommend them to use IMAP and CalDavSynchronizer. Now that I took a quick peek in our logs I found this one that I haven't seen before I think... "Fatal error occured - tried to call -processSyncAddCommand: ... on a mail folder. We abort" ... other than that it's mostly just "found no viewer for MIME type". I suspect this might have nothing to do with it though and it's probably more than one issue. // Mattias * Peter Beck (pe...@datentraeger.li) wrote: > On 10/10/2015 08:22 PM, Alain Abbas wrote: > > for now we had stopped the deployement of activesync and outlook2013 > > Hi Alain, > > good to know I am not the only one ;-) > I've also switched (at least the big mailboxes) to IMAP and > CalDavSynchronizer (which will hopefully soon get CardDAV support). > > But still hoping someone can enlighten us here on the list... > > Regards > Peter > -- > users@sogo.nu > https://inverse.ca/sogo/lists -- users@sogo.nu https://inverse.ca/sogo/lists