Please provide more information. Is the Outlook client in a local network or external to your Astaro? Is the mail server local or external? Does the client connect when the Astaro is not in between? Are you running the SMTP Proxy? Are you running the POP3 Proxy? Etc.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
Please provide more information. Is the Outlook client in a local network or external to your Astaro? Is the mail server local or external? Does the client connect when the Astaro is not in between? Are you running the SMTP Proxy? Are you running the POP3 Proxy? Etc.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005