Output: 530 Authentication required

[jarqvi]

Describe the bug

Hey everyone.
I registered a domain in Postal with two addresses, like:

domain: example.com
address-1: [email protected]
address-2: [email protected]

When i want send an email from address-1([email protected]) to address-2([email protected]) i get this error:

Temporary SMTP delivery error when sending to 88.X.X.X:25 (XXX.email)
Output: 530 Authentication required

Whereas if I have registered another domain in Postal, for example:

domain: domain.com
address-1: [email protected]
address-2: [email protected]

I can send an email from [email protected] to [email protected].
Does anyone have a solution?

[willpower232]

I'm confused about your setup, are you trying to send an email from Postal to the same Postal?

[jarqvi]

I have two addresses from the same domain on a postal.
I get this error when I send email from the first address to the second address of this domain.

Temporary SMTP delivery error when sending to 88.X.X.X:25 (XXX.email)
Output: 530 Authentication required