None of my users can send email

[appomattoxit]

Hello,
I manage IT for a local county. We use apps.rackspace.com as an email provider.

We are not abe to send email to anyone inside or outside of our domain. We're in a real emergency situation as our 911 notifications rely on email.

Here's the error every returned email provides:

host relay-webapps.rsapps.net[172.27.255.140] said: 550
5.7.26 550-5.7.26 This message does not pass authentication checks.
Destination server has blocked your message. Please fix your domain DNS
configuration, Thanks!. (ZD/67D1379) (in reply to end of DATA command)

We haven't had to touch our DNS settings in years.
Could someone help me figure out if our settings are broken and not allowing us to send emails? Thank you!

TXT records​

HOST TEXT TTL appomattoxcountyva.gov v=spf1 include:emailsrvr.com ip4:149.72.180.245 ~all 3600 sec 20230131-bw7jej0m._domainkey.appomattoxcountyva.gov v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCztgwsvt8kAaUfNI6xzqRdZLdP+kMa/5qgyhQSFA3ZT6H1Hn2JXENjrS4fdmMzEIBlDWjFz0F1NA745laB1QGFAqDWYYEJR525McHpEnGogJ/1NA+QonLviPJLAFOL1xeJ01136YYpUSIbI1xMyeG2Zhti5Qf8GZaCvRERtjGRRQIDAQAB; 3600 sec _dmarc.appomattoxcountyva.gov v=DMARC1; p=quarantine; rua=mailto:ace.bailey@appomattoxcountyva.gov

 

[El.]

Hello. We see that you have made multiple changes to your SPF TXT record over the last couple of hours. Has this helped?