Recipient address rejected: Service is unavailable (try later)

[NathanH]

Hello,

Sorry for my English.

I have set up a small Proxmox cluster and randomly on certain destination e-mail addresses I have the Recipient address rejected: Service is unavailable (try later) error

However, according to the sender, the error does not appear.
Greylisting is OFF.

Do you have any idea where this error came from?

Thank you
Regards,

 

[dietmar]

The error message indicates that greylisting in on.

 

[NathanH]

Thanks for your reply.

I have disable greylisting for ipv4 and ipv6 and the the message is still there.
If it was greylisting, wouldn't it say "greylist" in the error message? (Email temporarily rejected by greylisting)

 

[NathanH]

Here a screenshot of the configuration panel.




At the moment I don't have a subscription but if I manage to make everything work, I think of course going to purchase.

 

[Stoiko Ivanov]

My guess is that the message is still caused by greylisting - although probably at the remote host where you try to send a mail to?

In any case to debug this further we would need the complete log for such a message.