post...@nisny.com:
> I recently moved out mail operations to a new server. The old server is
> running Postfix 2.8 and the new server 2.10.
>
> We had some initial problems with some private blacklists and the new IP
> but those were resolved. However, I had a curious problem sending mail
> to icloud.com addresses. Postfix was reporting:
>
> lost connection with mx5.icloud.com.akadns.net[17.172.34.68] while
> receiving the initial server greeting
>
> to all MX servers for adadns.net.
What is your servers's public IP address? I suspect that PTR
or A lookups are taking too long when the remote SMTP server is
trying to determine your server's hostname.
Wietse
