Heiko Schlittermann wrote:
>> 2008-02-19 11:33:22 H=mailhub.netex.ro [193.178.141.9] Warning: recipient
>> callout failed: mail
>>
>> I assume this happens because the exchange port is configured to require
>> starttls before mail.
>
> If I remember well than the callout mechanism bypasses the normal
> router/transport configuration. Once I had a similar problem. I'm not
> sure if the callouts used SSL/TLS at all. May be there's something in
> the archives.
>
The callout mechanism doesn't use SSL or TLS and it always uses HELO,
not EHLO.