Sorry that I have to ask again... but I cant see how to do this ?!?
SG230 serves as SMTP relay, catches all mails from the internal mailserver and sends them as sg230.domain.com via WAN 1.
Now my WAN 1 with static IP (mx, SPF, TLS Cert. and rdns records) fails.
WAN 2 is still up, but is runnig on a dynamic IP -> SG230 sends Mails via WAN2 and all of them will be bounced back because of a blacklisted dynamic IP.
Is there any chance to prevent the SG230 sending over WAN2 and keep Mails in queue till WAN1 is up again?
Sorry that I have to ask again... but I cant see how to do this ?!?
SG230 serves as SMTP relay, catches all mails from the internal mailserver and sends them as sg230.domain.com via WAN 1.
Now my WAN 1 with static IP (mx, SPF, TLS Cert. and rdns records) fails.
WAN 2 is still up, but is runnig on a dynamic IP -> SG230 sends Mails via WAN2 and all of them will be bounced back because of a blacklisted dynamic IP.
Is there any chance to prevent the SG230 sending over WAN2 and keep Mails in queue till WAN1 is up again?