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From: TWSocket [mailto:twsocket-boun...@lists.elists.org] On Behalf Of Max
Terentiev
Sent: 18 September 2015 02:07
To: ICS support mailing
Subject: [twsocket] TWSocket.Connet/GetHostByName bottleneck
Hi,
I develop smtp relay server using ICS. And I notice very big performance hit if
many
> At this time I see this way:
>
> 1. Use TDNSQuery.MXLookup to resolve MX, then TDNSQuery.ALookup to
> resolve MX's IP. Then supply resolved MX IP to TSmtpCli to avoid
> GetHostByName.
>
> 2. Cache both MX and A results in my own DNS cache.
Seems sensible, just make sure you time out the
Hi,
I develop smtp relay server using ICS. And I notice very big performance hit
if many TSmtpCli's connects to remote MX server in parallel !
I use TDnsQuery to resolve domain's MX server then supply result to
TSmtpCli.
If I use 100+ TSmtpCli instances most of them waits for OnRequestDone
