[PLUG] Another "slow" issue -- Thunderbird sending e-mail

[wes]

On Tue, Nov 22, 2011 at 11:54 AM, Benjamin Kerensa <bkerensa at ubuntu.com>wrote:

> On 11/22/2011 11:49 AM, Richard C. Steffens wrote:
> > On 11/22/2011 11:47 AM, Richard C. Steffens wrote:
> >> Also since I installed the WRT54G:
> >>
> >> When I send an e-mail it takes many seconds for the mail to leave my
> >> desktop. I don't have any trouble with download speed for e-mail, just
> >> upload. It appears to be during the handshake phase and not the data
> >> transfer phase -- although I don't know how I came to that conclusion.
> >>
> >> Any thoughts?
> >>
> >> Could this be related to the slow handshake between my various home
> >> machines?
> >>
> > Naturally, as soon as I clicked on Send for that one it went right
> > through with no delay. Sigh.
> >
> Unless your sending large attachments bandwidth should very rarely have
> a impact on
> your sending e-mail. If anything your DNS lookups are slow or perhaps
> there is a issue on the server
> that handles SMTP.
>
>
>
I agree that this feels like a DNS problem. The router probably assigned
itself (192.168.x.1) as the DNS server for all the devices on your network.
So it's acting as a recursive DNS server, and it may be doing so slowly.
The way to test this is to override it, have your machine use comcast's DNS
servers directly. You would need to edit /etc/resolv.conf to accomplish
this.

-wes