Re: [tlug] Email issues

[Jim Tittsler <jwt-tlug@example.com>]

On Aug 7, 2007, at 23:24, tlug@example.com wrote:

> Yes, I experience similar issues occasionally.  For example,  
> yesterday I sent
> three emails at the following times: 19:48, 19:56, and 20:08.  The  
> last two
> went through immediately, and I received the first one a while later.

Which is rather what you would expect given our greylisting  
implementation.  The first caused hikari to note your sending host,  
but hikari defers accepting the message.   The next two go through  
immediately because your host is in the greylist database.  Your  
server gets around to retrying the first message 30 minutes after the  
first attempt and it goes through.

>   The worst I have experiences was a whole day delay.  I sort my  
> TLUG folder by
> date, and sometimes when a message has been delayed significantly,  
> I have to
> scroll my message list quite a bit to find it.

I've not seen that big of a delay... but just scanning through the  
greylist I see your mail actually arrives from more than one IP  
address, which could impose delays on each.

> So, I checked out the email headers and see that the delay took  
> place between
> my host's postfix server and the hikari exim server.  From what I  
> can tell,
> the exim server gets overwhelmed at times and does not accept email
> temporarily.

While that is certainly possible (there are safeguards on number of  
accepted incoming connections and server load), I think greylisting  
accounts for the delay.

Jim


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