On 17/12/2024 06:06, Simon Wilson via Postfix-users wrote: > > Hi Postfix list, > > I have a stable low-volume Postfix setup on a 10-year-history IP address. In > mid-2025 we need to relocate interstate. > The mail MX is going to be offline for a few days for the relocation and have > possible further outage time through new > location setup. The new location will also likely end up with a different > static IP. There is nothing business > critical coming through the server, but I would prefer to not totally lose > inbound email during relocation downtime. > > In (early) anticipation of this I am aiming to setup a VPS secondary MX for > the domains served by the primary MX to > store and relay-fwd to primary MX when it is back online in case the downtime > extends over several days. > > This can be a relatively simple config I believe from looking at > https://www.postfix.org/STANDARD_CONFIGURATION_README.html#backup > > I have some questions and would appreciate advice from the list. >
I heartily recommend PostScreen, designed to detect and reject compromised BotNet hosts. Configured with a reliable RBL blacklist (say zen.spamhaus), it can reject over 90 percent of bad senders, before they even connect with your mail server. I see perhaps 4 false positives a year, where it rejects something I wanted. Hope this helps Allen C _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
