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Oxi
Asked: 2016-04-15 00:01:55 +0800 CST

How to include multiple spf domains with different mechanisms in a single spf TXT Record [duplicate]

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EDIT : How to Mix the different mechanisms (a , mx , ip4 , ptr and include) to create single SPF file from 4

I know that 2 simple SPF records like

v=spf1 include:_spf.google.com ~all
v=spf1 include:otherdomain.com ~all

can be merged to one as

v=spf1 include:_spf.google.com include:otherdomain.com ~all

I have bit more complex SPF records with mechanisms like a mx ip4 ptr and include as shown below

v=spf1 a mx ptr include:icpbounce.com include:spf.mandrillapp.com ~all    
v=spf1 mx ip4:x.x.x.x include:mktomail.com ~all     
v=spf1 mx ip4:y.y.y.y include:mktomail.com ~all    
v=spf1 include:spf.mandrillapp.com ?all

How can merge all this to one TXT record, as mandrilapp is giving me an error

has more than one TXT record that looks like an SPF record

I cant try a trial and error as its in production and i am very new to this SPF domain

domain-name-system spf mx-record txt-record

1 Answers

  1. Best Answer

    You can combine them all like this. 

    v=spf1 a mx ptr ip4:x.x.x.x ip4:y.y.y.y include:mktomail.com include:icpbounce.com include:spf.mandrillapp.com -all

    I recommend changing the ~all to -all - the whole point in setting up authentication in the first place is to make it fail when it's violated. Then test sending emails from all the different places to a testing tool like [email protected]. To ensure the SPF passes from each send point.

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