Hi just for Info, today i got a support call for 2 imap accounts with windows 7 64 with thunderbird 17.03 not syncing new mails in INBOX ( no problem other folders ) reproducable on serveral computers , with new installs of thunderbird no antivirus etc was involved The accounts worked perfect with thunderbird same version in linux and in horde webmail, no bug in server or tb log was shown no thunderbird recover etc procedure helped i final ended up in deleting dovecot.index dovecot.index.cache dovecot.index.log dovecot.index.log.2 dovecot-uidlist this fixed the problem no idea why it only came up on windows Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstra?e 15, 81669 M?nchen Sitz der Gesellschaft: M?nchen, Amtsgericht M?nchen: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Joerg Heidrich