I suggest “as short as possible” - 10, maybe 20 seconds with no mail? 

laura 

> On Jul 31, 2017, at 1:21 PM, Ryan Harris via mailop <mailop@mailop.org> wrote:
> 
> 
> What are you optimizing for?  Connection time/overhead?  
> 
> Optimizing for connection reuse since the overhead of creating connections is 
> actually high for us. So we want to send as many messages as we can over a 
> single connection before closing it.
> 
> Naturally we don't want to cause unrest within the ecosphere by keeping 
> connections open for too long.
> 
> It would seem kind of pointless to keep a connection open for 10 minutes to 
> save 2s of connection time, for example.
> 
> Agreed, but when you are sending high volumes of email, optimizing the 
> opening of a connection and reuse of a connection is worth us investigating.
> 
> 
> Not that we're the best neighbors in this regard, but we don't reuse 
> connections for the vast majority of endpoints, just the highest by volume, 
> and we only keep connections open for potential reuse for 30s.
> 
> Appreciate the additional details.
> 
> 
> Ryan
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Having an Email Crisis?  800 823-9674 

Laura Atkins
Word to the Wise
la...@wordtothewise.com
(650) 437-0741          

Email Delivery Blog: http://wordtothewise.com/blog      






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