Hello,

Odoo 10.0, community edition. Mail server is based on Synology mail server. Incoming e-mail server accounts (IMAP) are configured with advanced setting "keep original". 

Even so, some times Odoo is "stealing" messages - the stealed messages are fully gone from mail server, without any send receive record and are visible in Odoo under Settings-Technical-e-mails-messages.

This is not happening with all messages, but with some messages only.

Any ideas?

Thank you, A.