How do I fix this: Gmail requires all senders to authenticate with either SPF or DKIM.

Hello, 

Can you go ahead and try once more? I have updated the TXT SPF record for your domain which should allow it to begin working properly.

Thank you Elyzabethv.  Everything is working now. I appreciate you.

Elizabeth, I'm having the same issue for shawn@shawn-hamilton.com

We are having same problem sending emails from our domain (@mulfordgardens.org). Our homestead website uses that domain and has several email accounts, e.g. admin@, treasurer@, events@.

This error appears when we send to a gmail account, in this case mgiaevents@gmail.com. We get this error;

Mail delivery failed: returning message to sender
Gmail requires all senders to authenticate with either SPF or DKIM

@elyzabethv  - I am having the same situation!  Sent email from leann@astresslesstransition.com to leannmooretpa07@gmail.com and it's now in Never-Never Land.  No undeliverable message.  No bounce back.  I've had several clients with gmail accounts say email never received.  Please help!  I'm losing business because of this.

I had a similar problem with gmail accounts and called homestead tech support and Alan was quite helpful.  Gmail requires an SPF or DKIM authentication. For SPF, you can edit the advanced DNS settings for your domain. Go to the TXT section and that should look like this: 

This is explained in the email setup article in homestead.

I am having the same problem:  emails sent from my Homestead email server to gmail addresses are being bounced back.  I have set the SPF code in the homestead advanced settings to at TXT record of "v=spf1 include:_spf.google.com ~all", as per the google instructions for setting up email authentication, however this has not solved the problem.  I continue to get a bounce back message of the form below.

Please advise how to fix this problem soonest.  Thank you.

________________________________________________________________________________________________

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

    host gmail-smtp-in.l.google.com [172.253.122.26]

    SMTP error from remote mail server after pipelined end of data:

    550-5.7.26 This mail has been blocked because the sender is unauthenticated.

    550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM.

    550-5.7.26

    550-5.7.26  Authentication results:

    550-5.7.26  DKIM = did not pass

    550-5.7.26  SPF [retrouvaillecalgary.com] with ip:

    [66.96.184.2] = did not pass

    550-5.7.26

    550-5.7.26  For instructions on setting up authentication, go to

    550 5.7.26  https://support.google.com/mail/answer/81126#authentication t3-20020a0cde03000000b0067f9d0c7fedsi770681qvk.360 - gsmtp

I have the same or similar problem!  My e-mails do not reach one particular corporate client.  Here's what this client IT person told me:  "We're getting an error when they send us e-mails "SPF Sender Invalid".  SPF records protect against malicious emails that attempt to perform email spoofing.  It's captured by a spam filter that checks the SPF record. Which is what happened here."

Thus, it's a "SPF Validation Error" or "SPF Sender Invalid" headline.

It would be great if you can help ... thank you!