Bug: fail in SMTP notification service via Shoutrrr #303

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saavagebueno · 2025-11-20T04:22:30-05:00

saavagebueno commented

2025-11-20 04:22:30 -05:00

Originally created by @pbodq2 on GitHub (Aug 30, 2023).

SMTP authentication fails in v2.5.0 onward but not v2.4.1

Is this urgent: No
DNS provider(s) you use: Cloudflare
Program version:
Running Docker images
v2.5.0
Digest:sha256:71322af80a53fbafa8106c2a111ba8f21e8f1c72d8df01282422e837ff616c39
latest built on Aug-8-2023
Digest:sha256:834268eaa69c802e51e9fa377074fc95ccf58201a2592126367b1a072369d7d7
What are you using to run the container: Synology DSM built Docker package v20.10.3
Extra information (optional)

Logs:

Both v2.4.1 and v2.5.0 are fresh download and created. Using the same SHOUTRRR_ADDRESSES as below, problem only occurs in v2.5.0. Now, I roll back to v2.4.1 and I can receive emails.
Under v2.5.0, no matter what protocals I tried, Gmail at port 587 still rejects my connection.

I explicitly run a Windows x64 exe which I downloaded from Shoutrrr site. The below address URI runs very well and I can receive emails.

Configuration file (remove your credentials!):

-e SHOUTRRR_ADDRESSES=smtp://sender@gmail.com:password@smtp.gmail.com:587/?from=sender@gmail.com&to=receiver@gmail.com

Host OS: Synology DSM 6.2.2-24922 Update 4

Originally created by @pbodq2 on GitHub (Aug 30, 2023). SMTP authentication fails in v2.5.0 onward but not v2.4.1 1. Is this urgent: No 2. DNS provider(s) you use: Cloudflare 3. Program version: Running Docker images **_v2.5.0_** Digest:sha256:71322af80a53fbafa8106c2a111ba8f21e8f1c72d8df01282422e837ff616c39 **_latest built on Aug-8-2023_** Digest:sha256:834268eaa69c802e51e9fa377074fc95ccf58201a2592126367b1a072369d7d7 4. What are you using to run the container: Synology DSM built Docker package v20.10.3 5. Extra information (optional) Logs: ![v250](https://github.com/qdm12/ddns-updater/assets/25418300/a0677975-c0c3-4a20-bb78-caf44378afb1) Both v2.4.1 and v2.5.0 are fresh download and created. Using the same SHOUTRRR_ADDRESSES as below, problem only occurs in v2.5.0. Now, I roll back to v2.4.1 and I can receive emails. Under v2.5.0, no matter what [protocals](https://containrrr.dev/shoutrrr/v0.7/services/email/) I tried, Gmail at port 587 still rejects my connection. I explicitly run a Windows x64 exe which I downloaded from Shoutrrr site. The below address URI runs very well and I can receive emails. Configuration file (**remove your credentials!**): -e SHOUTRRR_ADDRESSES=smtp://sender@gmail.com:password@smtp.gmail.com:587/?from=sender@gmail.com&to=receiver@gmail.com Host OS: Synology DSM 6.2.2-24922 Update 4

saavagebueno added the Priority: 💤 Low priority Closed: ⚰️ Inactive Category: Shoutrrr 📢 labels 2025-11-20 04:22:30 -05:00

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Reference: starred/ddns-updater#303