![g suite high spam filter settings spf g suite high spam filter settings spf](https://i.stack.imgur.com/33cCV.png)
DKIMĭKIM means DomainKeys Identified Mail. Replace tilde with a minus (-all) to refuse such mail outright. ~all - all mail from domains not explicitly specified in SPF will be filtered out into Spam. Include: - accept mail following the rules dictated by SPF of. Subnets can be specified the same way as for A records. Mx: - accept mail from servers specified in MX records of. Here, you can specify subnets as follows: /24. Here, you can also specify subnets as follows: 154.56.125.0/24.Ī: - accept mail from servers specified in A records of.
![g suite high spam filter settings spf g suite high spam filter settings spf](https://miro.medium.com/focal/1200/900/53/49/1*P_V3saUupjjmN8P5CtMfCA.jpeg)
Let’s dig into the following SPF record: "v=spf1 mx a ip4:154.56.125.94 a: mx: include: ~all"Ī - accept mail from servers that are listed in the A records for own domain. "all" - rules for all other domain that have no SPF record. "include" - allows applying SPF record from some other domain. "a" - IP addresses specified in A record of the domain. "ip6" - and this is where you find IPv6 addresses. "mx" - IP addresses of all servers specified in MX records of the domain. The record can be made shorter, "v=spf1 a mx -all", and still produce the same effect. In case the addresses don’t match, it would be better to refuse receiving the mail. This record tells that it is allowed to accept mail from IP addresses specified in A and MX records of the domain the SPF was added for. SPF record is a text cooked in a specific way. But mail server’s IP address cannot be forged like that, so when you have an SPF record, the receiving server checks it and acts accordingly. Also important is the domain reputation that SPF helps protect: when sending spam or phishing letters, plotters can put any address into the From field, which may result in problems for owners of domain names that were used for this purpose. SPF is a factor that helps make your mail more trustworthy and less seen in Spam. This is an extension for SMTP that allows adding a TXT type DNS records to a domain name and specify IP addresses from which you can send mail. Use command prompt (terminal) to run any of them replace “ip-address” in the examples above with the real IP. There is a number of commands you can run to check the PTR: nslookup nslookup -type=PTR ip-address dig dig -x ip-address If you occupy a simple virtual hosting account, you most likely don’t need it, since in most cases the record is already there and it points to the name of the hosting provider’s server. The record makes sense only in case you use a dedicated server or a VPS.
![g suite high spam filter settings spf g suite high spam filter settings spf](https://www.bettercloud.com/wp-content/uploads/2021/07/emailsecure.png)
PTR record can be added by the owner of IP of server that hosts your site. Thus, when you have PTR for your server, and it matches the domain name standing after in the address occupying the From field, the receiving mail server has more confidence in your mail. Depending on the results of that check, they either put letters to Inbox or filter them out to Spam. To fight spam most mail services check PTR for servers that send incoming mail. PTR is the opposite of A: it starts with the IP and returns the domain name. DNS servers keep A records, which is the association of a domain name and an IP of the server hosting the website going under that name. PTR record shows the association of the IP address and your site’s domain name. You have the following tools to make your mail more trustworthy and thus keep it out of Spam: Unfortunately, no one can guarantee 100% inbox hits, but keeping the amount of mail filtered to Spam to a minimum is quite possible. This article describes some options you have that offer relevant solutions. But that is only half the battle, now we need to make sure the mail we send hits Inbox and not Spam folder. In the previous article, we covered teaching your Drupal installation to send mail to users.