The documented workaround for undelivered voicemail is to add the Teams cloud service IP addresses to an SPF record, or create a transport rule that bypasses spam filtering for Cloud Voicemail from those addresses.

Checked 2026-09-25

Vendor
Microsoft
Product
Microsoft Teams Cloud Voicemail
Subsystem
troubleshooting
Deployment
multi-tenant, hybrid
Region
not restricted
Release range
current as of 2026-09-25
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Microsoft Teams Cloud Voicemail: source note teams-cloud-voicemail-spf-workaround. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-cloud-voicemail-spf-workaround

BibTeX

@misc{warmtransfer-claim-teams-cloud-voicemail-spf-workaround,
  title  = {Microsoft Teams Cloud Voicemail: source note teams-cloud-voicemail-spf-workaround},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/teams-cloud-voicemail-spf-workaround},
  note   = {Source note teams-cloud-voicemail-spf-workaround, checked 2026-09-25}
}

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