I just tested same red around username no matter what port, tried SMTP2go's listed SSL and TLS ports
It seems like TOS's input checking for username is bugged out no matter what I put in the username
Search found 2 matches
- 23 Aug 2025, 09:34
- Forum: System Configuration
- Topic: [Help] Unable to setup custom SMTP server in TOS 5.1
- Replies: 2
- Views: 309

- 23 Aug 2025, 05:58
- Forum: System Configuration
- Topic: [Help] Unable to setup custom SMTP server in TOS 5.1
- Replies: 2
- Views: 309

[Help] Unable to setup custom SMTP server in TOS 5.1
I am trying to setup a custom SMTP server via SMTP2go. When entering the username no matter what I use it shows as red and never lets me apply and save the settings. I'm using TOS 5.1.73 on a TNAS-412D This is what I get, the error is the same as using the actual username setup in SMTP2go. It seems ...