Due to a trust problem in some of our used IP ranges from the new mail-setup (mainly with gmail) we had to switch to a new (actually our old) IP and also hostnames for SMTP and IMAP. Please adopt your mail client settings (thunderbird, etc.) or any service using us as relay to use:
SMTP: mail.cubyte.net
IMAP: imap.cubyte.net
if you are not using our DNS servers (we updated them automatically), please adjust your MX records to point to MX 5 mail.cubyte.net
You will find these settings also accordingly in mailmanager