Cannot receive backup email: 504 5.5.2 <Sophos>: Helo command rejected: need fully-qualified hostname

Hi Ocha,

have a look here: https://community.sophos.com/products/xg-firewall/f/initial-setup/100311/how-to-assign-domain-hostname-to-sophosxg

Google is your friend :-)

I tried it but it did not work. To start with my hostname was not Sophos but in `HELO` command you can see it passes `Sophos` as argument which is supposed to be FQDN. Now, I followed that link above. I created real DNS entry (I have couple domains) for my FW and added it in FQDN list and also as hostname in Admin Settings. I rebooted FW and it still uses Sophos as fqdn in HELO command.

Then try this, please: https://community.sophos.com/products/xg-firewall/f/email-protection/77473/how-to-change-helo-hostname-for-outbound-smtp-sessions

That was it! Thank you so much

That was it! Thank you so much