Null senders = bounces. You certainly must accept them.
And rcpt to: cerebrum@??? is getting temporarily 5xx'd because it
is receiving a flood of bounces - possibly because you keep unfreezing
that bounce and sending it across again and again
Once the bounces stop flowing in at such a huge rate, that account will
resume accepting email
srs (postmaster@???)
Tim AtLee wrote:
> I came to check on my email, and have this 30x times in my inbox, and I seem to be getting a new one every few minutes:
>
> Message 1C1biA-0004ou-M3 has been frozen (delivery error message).
> The sender is <>.
>
> The following address(es) have yet to be delivered:
> cerebrum@???: SMTP error from remote mailer after RCPT TO:<cerebrum@???>: host iname-com.mr.outblaze.com [205.158.62.68]: 550 <cerebrum@???>: No thank you rejected: Account Unavailable: Possible Forgery
>
>
> What am I missing in my ACL that is letting null senders get through?
