Mulitple 3rd Party smtp with 1 domain?

Discussion in 'Noob Central' started by cpastar, Mar 18, 2016.

  1. cpastar

    cpastar New Member

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    Hi,

    Can 1 email domain and 1 server domain have multiple 3rd Party SMTP? DKIM and SPF TXT. Logically I do not think it can, haven tried it. Want to ask experts here your opinion.

    E.g.

    www.emaildomain.com
    - Amazon SES
    - Sendgrid
    - Elastic Mail

    I know SES wants our server domain dkim, so I also include server domain. I dunno the rest. But I hope you know what I mean.
    www.serverdomain.com
    - Amazon SES
    - Sendgrid
    - Elastic Mail

    If this can be done, isn't it great that 1 domain server can have different SMTP?
     
  2. nickphx

    nickphx VIP

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    Yes, it's possible. As long as each provider's dkim selector name is unique.
    You would need to combine the spf records from each provider into one record.
    Some providers like SES provide an include on a CNAME for SPF.
    With that type of configuration, you will need to monitor the values of those and keep your merged SPF record updated..

    If DMARC/whatever is required then you would need to merge those as well.
     
  3. bambito

    bambito New Member

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    Just be sure not to go over the 10 DNS lookup limit for the SPF record.
     
  4. cpastar

    cpastar New Member

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    Wow thanks nick and bambito!

    So if Sendgrid ban my account, the rest (ses, elastic, mandrill and etc) will still be running right?
     
  5. nickphx

    nickphx VIP

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    Assuming you properly configured the dns records required for those other ESPs to send mail, yes..
     

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