Check PTR/FCrDNS/SPF/DKIM/DMARC for messages coming from new IPs, and
start to warm up new IP range by moving some fraction of traffic to it.
For < 10K mails/day I don't think you have something to worry about.

You may have a problem if you are a mail forwarder, e.g. you manage a
public mailing list and do not perform From: overwriting, because this
kind of traffic usually requires whitelisting.

30.04.2018 18:35, Rob Nagler пишет:
> Is there a way to "pre-register" IPs in preparation for a data center
> move? There's been some discussion this list, but I didn't get a sense
> of a definitive answer. 
>
> We have held the new IPs (216.17.132.32/27 <http://216.17.132.32/27>)
> for many months. The old IPs have been in use by us for two decades
> for a handful of sending domains. I know the new IPs haven't been in
> use by spammers and their reputation seems to be clean on the spot
> checks I've done. We've also been using the new IPs to send some mail
> (like this msg). The new IPs have been in the SPF records for many months.
>
> We have started to go to Google, MS SNDS, etc. Is that the best that
> we can do? We could go to a reputation service, but this seems
> overkill as we aren't an ESB, just ordinary (small) email lists and
> aliases with a few monthly mass mailing (<10K lists).
>
> Thanks,
> Rob
>
>
>
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-- 
Vladimir Dubrovin
@Mail.Ru

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