On 07/04/2020 19:43, Linda Pagillo via Exim-users wrote: > set up Exim as a backup MX server for the > Windows servers.
Preferably you need to have the backup know what the legitimate email accounts are - both local-part and domain - so that it can reject bad ones at SMTP time. Otherwise it becomes a source of backscatter (and, while I think of it, please do ensure that your primary does the same. It's not the default Exchange configuration; they do accept-then bounce as standard). Getting that knowlege depends on your existing setup. Possibly it's a case of pointing Exim at your AD server, and hoping it really does talk LDAP sanely. -- Cheers, Jeremy -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
