Undelivered Mail Returned to Sender

This is the mail system at host vps24249.dreamhostps.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

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If you do so, please include this email in your support ticket. You can
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DreamHost Email Support

<andrew.ucip@gmail.com>: host gmail-smtp-in.l.google.com[172.253.122.27] said:
550-5.7.26 This message does not pass authentication checks (SPF and DKIM
both 550-5.7.26 do not pass). SPF check for [sims.romulanempire.org] does
not pass 550-5.7.26 with ip: [67.205.44.182].To best protect our users from
spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26
https://support.google.com/mail/answer/81126#authentication for more 550
5.7.26 information. i10-20020a0c9c8a000000b005a233e62d80si2691103qvf.370 -
gsmtp (in reply to end of DATA command)

<tlsahm@gmail.com>: host gmail-smtp-in.l.google.com[172.253.122.27] said:
550-5.7.26 This message does not pass authentication checks (SPF and DKIM
both 550-5.7.26 do not pass). SPF check for [sims.romulanempire.org] does
not pass 550-5.7.26 with ip: [67.205.44.182].To best protect our users from
spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26
https://support.google.com/mail/answer/81126#authentication for more 550
5.7.26 information. i10-20020a0c9c8a000000b005a233e62d80si2691103qvf.370 -
gsmtp (in reply to end of DATA command)