Let's say I have three domains:
domain1.com domain2.com domain3.com
For each, I have the following SPF records:
domain1.com
v=spf1 ip4:x.x.x.x ip4:y.y.y.y include:domain2.com ~all
domain2.com
v=spf1 ip4:c.c.c.c ip4:d.d.d.d include:domain3.com ~all
domain3.com
v=spf1 ip4:.e.e.e.e ip4:f.f.f.f ~all
Now, I am sending my email from following domains:
MFROM (return-path): [email protected] PRA (from): [email protected]
For these two domains, I have following SPF:
test-a.com:
v=spf1 redirect=domain1.com
test-b.com
v=spf1 include:domain1.com ~all
When I test this structure through SPF test tools, it passes. But I wonder if adding "a" and "mx" to the SPF record of domain1.com, domain2.com and domain3.com will increase Hotmail/Yahoo/Gmail/AOL inbox delivery success.
Any ideas/suggestions?
Thanks.
Mat.