Discuss mailing list

[Sgiath <sgiath AT sgiath.dev>]

On 7/31/21 4:55 PM, Max Shenfield wrote:
> Howdy! On Thursday 07/29, I attempted to sign up for an OpenNIC 
> membership using my personal gmail account (shenfieldmax AT gmail.com). I 
> did not receive a confirmation email. I tried going through the "Resend" 
> flow, but that didn't resolve the issue. I triple checked my messages 
> and Spam folder - I haven't received an email from OpenNIC on that 
> account as of today (07/31). I immediately received a confirmation email 
> when signing up using a mailinator.com address today, and successfully 
> create an account that way. Not being able to sign up with a common 
> email provider seems like a real issue, so wanted to bring it to your 
> attention. Thanks, Max

Hi, I remember having issue registering with email on my private mail 
server. Ultimately I had to whitelist `util-01.opennicproject.org` and
`util-02.opennicproject.org` in Postfix to get it working.

It wasn't passing my `smtpd_helo_restrictions`:

```
reject_non_fqdn_helo_hostname
reject_invalid_helo_hostname
reject_unknown_helo_hostname
```

It was a while ago so I don't remember exactly which. Anyway there is 
definitely something non-standard with OpenNIC email servers which may 
cause some email servers reject the messages. OpenNIC is the only 
legitimate sender which I had to whitelist - all other mail servers are 
working with my config without issues.

Have a nice day
--
Sgiath
https://sgiath.dev
GPG: 0x70F9C7DE34CB3BC8

Why is HTML email a security nightmare? See https://useplaintext.email/

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