On Wed, May 17, 2023 at 5:06 PM Christian via Mailman-users < mailman-users@mailman3.org> wrote:
Thank you for your reply. I'm being driven mad by Gmail rejecting my SPF record, this while I get SPF record approvals everywhere else.
I read that having two SPF records for the same server will generate errors. Is this true?
You can only have 1 SPF record.
SPF = Sender Permitted From. It's a list of hosts that are allowed to originate emails using your domain name. If your server sends out emails directly to the Internet, then you'll only have its name or IP in the SPF record. If your server uses a smarthost to relay mail, then you have that host's IP or name (must match a PTR record) in the SPF record. There are situations where you can have some mails sent out directly while some are sent out via a smarthost - depending on some criteria. In such a case you need to publish both hosts in SPF records.
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