![]() Not sure what ?all would do in this case. So please be aware of that if you use -all which is obviously best. Obviously this is a bad set up at the customers end, but if your client or yourself can not send to certain customers (no matter how misconfigured they are, and it being their fault) has a knock on to the business You can learn more about how to configure SPF records, proper format and syntax, as well as helpful hints here. Copy and paste the result into a TXT record (through your DNS provider). If senderA doesn t use SPF it all goes through fine, or if SPF set to ~all goes through fine SPF Record Generator This wizard will guide you through the process of generating your own SPF record. problems is the email has been 'officially' sent from SpamcheckerB and not SenderA. MailserverC is also set up to check for spam including SPF. SpamCheckerB scans the email and then forwards on to mailserverC so email goes from SenderA to SpamCheckerB. A clients customer, had a spam checker that was offsite, that forwards This leads to a problem with people they email without things set up right. If you use -all SPF checkers will only allow emails to come from authorised senders. I ve not used ?all, but due to the experience I'm about to explain it could be useful (saves having to use ~all which makes spf pointless) all is best - means no one else can pretend to be you. So +ip4:x.x.x.x(webserver IP) +a:As for the all bit If your website hosted elsewhere has an email form on it you'll need to authorise your webserver to send on your behalf as it will most likely send from a email address (your own server could class it as spam if not included) some SPF servers I've found look for the a record and not IP when tracing back (usually pain ones, so never hurts to add as resolves +ip4:1.2.3.4 +a: +a: - This covers your server doing email directly from it. I would then add the IP's and Domains of any PC authorised to send emails on your behalf V=spf1 - to show this is the SPF settings On the name server you set up a new TXT for. But the SPF settings get applied to the domain at Nameserver level, so not on the local server, but wherever is configured that
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