Cannot connect IMAP, webmail is working

Cannot connect IMAP, webmail is working

This morning @krasas.lv users can't connect to IMAP. Webmail is working. We are using Zoho mail for third month and this is already second time when we have few hours downtime.
Please fix it as soon as possible!

p.s. configuration from our side is not changed. So it seems that Zoho have problems with IMAP.

Toms