Re: [courier-users] [revisited] Latest courier & SMTP

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Lisa Muir writes:

> On Aug 15, 2007 10:17 PM, Sam Varshavchik <mrsam@courier-mta.com> wrote:
>> But they may have different iptables setups. There are several variables to
>> check out. A delay of exactly 30 seconds is the ident lookup expiring.
>
> Got a new one today after all this time, delay of exactly 90 seconds
> on SMTP connect to the message going.
>
> Is this DNS again (at first glance looks perfect) or does 90 seconds
> delay indicate something specific?

Must be DNS. The ident timeout is 30 seconds, sharp. This could be anything:
forward or reverse DNS lookup on the IP address, or blacklist lookups, if
you are using blacklists.

> Could be co-incidential though that its 90 seconds, and just a server
> load issue that I need to resolve.

That's also possible if you've maxed out on the maximum number of SMTP
connections. If so, though, you should see warning messages in syslog.



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