Per their instructions here: https://www.ionos.com/help/domains/configuring-mail-servers-and-other-related-records/using-an-spf-record-to-prevent-spam/
Just add these to your SPF record like so. v=spf1 a mx include:_spf.perfora.net include:_spf.kundenserver.de ~all You probably don't need the MX mechanism given they publish a different subnet in SPF for their sending MTAs, but feel free to verify by testing if you remove it. To your original question about IP addresses, the ip4 mechanism allows for singular IP addresses as well as CIDR format to add subnets. (i.e. ip4: 74.208.4.192/26) But you don't need to do this, as this subnet is covered by the SPF record includes above provided by IONOS. Thanks, Mark Alley On Sun, Feb 5, 2023, 6:44 PM H via mailop <[email protected]> wrote: > I have a domain with multiple email addresses hosted by Ionos. I have > found that outgoing emails can come from a range of Ionos email IPs. > > I have created a TXT record for my domain containing one IP4 address but > outgoing emails seem to be sent from different IP4 addresses. As an example > I now have: > > v=spf1 a mx ip4:74.208.4.194 ~all > > I know I can add at least one more ip4 address using the same format but I > am not sure exactly what the Ionos email ip range might be so: > > - Is there a way of saying eg. ip4:72.20.8.* > > - Or should I delete the ip4 component and instead add: > > include:mydomain.tld (corrected of course) > > Suggestions appreciated! > > Thanks. > > _______________________________________________ > mailop mailing list > [email protected] > https://list.mailop.org/listinfo/mailop >
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