On Mon, Nov 03, 2025 at 04:16:39PM +0000, Alex Tarry via Exim-users wrote: > Hello everyone, > I've got a question regarding how best to warm up a new server's IP when one > has a full email workload to start with.
Reputation checks are quite obscure things, because mail providers do not disclose details of their implementations. You can't rely on any proposal about algorithms, timings and other details. No one "mail warming service" can guarantee 100% delivery to Inbox. Note that term "mail warming" is used not only for gradual increase of traffic from some ip or domain, but also for sending of thousands non-spam mails from this ip/domain to different boxes. It means that content of such "warming" mails is constructed specially to avoid looking as spam. But you can't control content if you are postmaster of some university. However, if mail passes SPF, DKIM and DMARC checks, is sent from ip with valid reverse, and also passes sender verification check, then reasons why this mail can be qualified as spam are reduced to "technical minimal", up to content. It's a good thing to start new relay with check of its ip against public RBLs and try to clean up as much as possible. -- Eugene Berdnikov -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## [email protected] ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
