# Softbounce Errors

- Provider: [SMTP2GO](https://down.guide/providers/smtp2go)
- Confidence: Confirmed
- Impact: Partial outage
- lasted 2h 20m
- started 2026-10-15 15:03 UTC
- Email sending (SMTP service)
- id: DWN-f90cc00807
- Official page: https://stspg.io/8933gtyrk3g1

## Updates from SMTP2GO
### 2026-10-15 15:03 UTC: investigating
The team recently updated how our servers process traffic. Specifically, SMTP (https://www.rfc-editor.org/info/rfc5321/#section-2.3.8) requires 0x0d immediately before 0x0a; a recent patch to Exim against "SMTP smuggling" has altered its behavior when it encounters a missing 0x0d.
The team is looking into rolling back this update, but in the meantime, we are suggesting connecting to 45.33.50.34, 43.228.184.6, or 45.33.53.153 instead of the mail.smtp2go.com hostname as a potential workaround.

### 2026-10-15 17:23 UTC: resolved
This incident has been resolved.

From the builder: does your app depend on SMTP2GO? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=smtp2go) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention SMTP2GO.

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=DWN-f90cc00807), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.