Recipient address rejected

mygeeknc

Renowned Member
Jan 31, 2013
57
5
73
I'm trialing PMG and I have two domains setup. I'm watching the realtime logs and I keep seeing a lot of Recipient address rejected: Service is unavailable (try later) messages. Does anyone know what this could be about?
 
this is greylisting. check docs for explanations.
 
That's the greylist working.
The first arriving mail will be delayed until the sender server retries sending the email.
 

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