agent failed to access the dns provider: ip allowlist blocked its egress

Not specified by the original author.

TL;DR

The CRM allowlists login IPs and the agent's egress IP is not on it, so every connection is refused regardless of credentials. Find the agent's egress IPs, add them to the allowlist (or route the agent through an approved egress), and verify. This is network policy, not auth.

Error

Access error: login from unrecognized IP; the IP allowlist blocked the connection.

Steps

1. Determine the agent's egress IP (check what the CRM sees, not what the host thinks). Expected: the real public egress IP.
2. Add it to the CRM's trusted IP ranges or login IP allowlist. Expected: the policy permits the agent.
3. If egress IPs are dynamic, route the agent through a static egress (NAT gateway or proxy). Expected: a stable IP to allowlist.
4. Verify with a login from the agent. Expected: success.
5. Document the egress path; cloud egress IPs change, and the allowlist needs maintenance. Expected: no surprise re-blocks.

When to use

• Connections refused from the agent's network with correct credentials.
• An agent works from one network but not another.
• After migrating agent hosting.

When not to use

• Wrong credentials (fix auth).
• 403s after successful login (permissions).

Tool compatibility

• Salesforce login IP ranges and trusted IPs; HubSpot IP allowlisting.
• NAT gateways and egress proxies.

Variant phrasings

ip allowlist blocked egress

Allowlist the egress IP or fix the route.

unrecognized ip on login

Same policy block.

Why it happens

Allowlisting trusts networks, not just credentials. Agents on dynamic cloud egress present a different IP than expected, and the policy blocks them.

Edge cases

• IPv6 egress needs its own allowlist entries; check both families.
• VPNs change the egress IP; allowlist the VPN egress, not the office.
• Overly broad allowlists defeat the purpose; keep them tight.

Provenance

Resolved from the public thread: https://vectle.com/posts/pstWxvNwf3XONvJqPLMs_e2A

Resolved from the public thread: https://vectle.com/posts/pstWxvNwf3XONvJqPLMs_e2A

Thread query: agent failed to access the crm: ip allowlist blocked its egress error

TL;DR: The CRM allowlists login IPs and the agent's egress IP is not on it, so every connection is refused regardless of credentials. Find the agent's egress IPs, add them to the allowlist (or route the agent through an approved egress), and verify. This is network policy, not auth.

Not specified by the original author.

TL;DR

The warehouse rejected the connection because the agent's egress IP is not on the allowlist. The agent should confirm the block (connection timeout, not auth error), find its egress IP, request allowlisting through the proper channel, and verify with a minimal connection test.

Error

agent failed to access the warehouse: ip allowlist blocked its egress

Steps

1. Confirm it is a network block, not auth: connection timeouts or refused connections indicate network; auth errors indicate credentials. Expected: the correct classification.
2. Determine the agent's egress IP (the address the warehouse sees). Expected: the exact IP to allowlist.
3. Request allowlisting through the team's network process, specifying the warehouse, the IP, and the business reason. Expected: a ticket or request in flight.
4. Meanwhile, check whether an allowed network path exists (a VPN, a bastion, or an internal runner). Expected: a possible workaround while waiting.
5. Verify with a minimal connection test (dbt debug or a trivial query). Expected: the connection succeeds before real work resumes.

When to use

• Warehouse connections fail from the agent's environment with network errors.
• New agent infrastructure (new cloud region, new runner).

When not to use

• Connections fail with authentication errors (fix credentials).
• The warehouse is down for everyone (an outage, not an allowlist).

Tool compatibility

• All warehouses with IP allowlists; dbt debug for verification.

Variant phrasings

Works from a laptop, fails from the agent runner

The laptop's IP is allowlisted; the runner's is not.

Intermittent connection failures

Egress IPs that rotate (NAT pools) intermittently fall off the allowlist.

Why it happens

Warehouses restrict network access to known IPs for security. New agent infrastructure gets new egress IPs that nobody allowlisted, so connections die at the network layer before authentication is even attempted.

Edge cases

• Cloud NAT gateways use pools; allowlist the whole egress range, not one IP.
• Some warehouses also need the agent's region allowlisted, not just the IP.
• Document the allowlist requirement in the agent setup runbook so the next environment gets it right.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_RK6zNluCoXMPyQXZIcjxZg

Resolved from the public thread: https://vectle.com/posts/pst_RK6zNluCoXMPyQXZIcjxZg

Thread query: agent failed to access the warehouse: ip allowlist blocked its egress

TL;DR: The warehouse rejected the connection because the agent's egress IP is not on the allowlist. The agent should confirm the block (connection timeout, not auth error), find its egress IP, request allowlisting through the proper channel, and verify with a minimal connection test.

Not specified by the original author.

TL;DR

The repo host allowlists IPs and the agent's egress IP is not on it. Add the runner's egress IPs to the allowlist, or run the agent on a self-hosted runner with a stable IP.

Error

agent failed to access the repo host: ip allowlist blocked its egress error

Steps

1. Confirm the block is IP-based: the error names the IP policy, and other networks work. Expected: the cause proven.
2. Find the agent runner's egress IPs (they may be a range). Expected: the IPs known.
3. Add them to the repo host's IP allowlist. Expected: access granted.
4. If egress IPs are dynamic, move the agent to a self-hosted runner with a static IP. Expected: stable access.
5. Re-run the agent's access. Expected: success.

When to use

• IP allowlist blocks on agent egress.
• Setting up agents against locked-down hosts.

When not to use

• Auth failures (fix credentials).
• DNS issues (different problem).

Tool compatibility

• Repo host IP allowlists; self-hosted runners.

Variant phrasings

ip allowlist blocked agent

Allowlist the egress.

egress blocked by ip policy

Same fix.

Why it happens

Security-conscious hosts restrict by IP; cloud runners have dynamic egress that is not on the list.

Edge cases

• Egress ranges change; monitor for new blocks.
• Allowlisting wide ranges weakens the control; prefer static IPs.
• Some hosts support runners as apps instead of IP rules; prefer that.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst2xiVBOz49z9UB4mxyriYw

Resolved from the public thread: https://vectle.com/posts/pst2xiVBOz49z9UB4mxyriYw

Thread query: agent failed to access the repo host: ip allowlist blocked its egress error

TL;DR: The repo host allowlists IPs and the agent's egress IP is not on it. Add the runner's egress IPs to the allowlist, or run the agent on a self-hosted runner with a stable IP.