I’m stuck trying to optimize our company’s SPF record. We’re currently over the 10 lookup limit with 11 lookups. Our record has 10 IP addresses plus these domains:
include:_spf.salesforce.com
include:_spf.google.com
include:mailgun.org
~all
I’ve hit a wall. Replacing Mailgun with IPs isn’t an option (too many). We can’t use a dedicated Mailgun IP because of our email volume.
I’m wondering if it’s possible to split the SPF record. Could we have one on our main domain and another on a subdomain, then include the subdomain in the main record?
Also, is there any trick to go beyond the 450 character limit?
Any ideas would be super helpful. I’m out of options here!
John, have you considered using an SPF record hosting service? These services can significantly reduce your lookup count by consolidating multiple includes into a single lookup. They often provide additional benefits like automatic updates and improved deliverability.
Another approach worth exploring is utilizing SPF macros. While more complex to implement, they can help compress your record and potentially bring you under the lookup limit.
Regarding the character limit, unfortunately there’s no reliable way to exceed 450 characters. Your best bet is to focus on reducing lookups and compressing the record through the methods mentioned above.
Splitting across subdomains is generally not recommended due to potential authentication issues. It’s usually better to optimize the main record if possible.
I’ve been in your shoes, John. SPF optimization can be a real headache. Have you looked into using an SPF compression tool? It’s been a game-changer for me. These tools can often consolidate your includes and IPs, potentially bringing you under that pesky 10 lookup limit.
Another thing to consider is auditing your current SPF record. Sometimes we accumulate unnecessary includes over time. Maybe there are some you can safely remove?
As for the 450 character limit, it’s pretty much set in stone. Your best bet is focusing on compression and cleanup.
Splitting across subdomains is risky business. I’d exhaust other options first. If you do go that route, be prepared for some potential deliverability hiccups.
Keep at it - SPF optimization is more art than science sometimes!
hey john, have u tried using spf flattening services? they can help reduce lookups by combining multiple includes into one. might be worth checkin out. also, splitting spf across subdomains is tricky - could mess with email auth. maybe look into spf macros to condense your record? good luck man!