YAM unable to download large messages?

So I had been using a stable old YAM version but recently
started running into problems with downloading today's
bigger messages (now routinely top 10MB these days. So I
upgraded to v2.8p1 and it seems have the same
shortcomings...

When it hits a 10-20MB, the message download most often
dies between 4-9MB's with this message:

------------------------------------------------
Bad response from mail server '<MY ISP>' of account
'<YAM NICKNAME OF MY ACCT' to
command 'RETR':

The mail server couldn't execute the command and
replied with the above error message.

(06/02/2014 12:25 AM)
------------------------------------------------

Not finding anything in YAM's settings to help this
(buffer sizes, timeouts, etc??), I tried increasing YAM's
stack from 32KB (its default) to 15MB. That seemed to
make the likelihood of success slightly higher, but
not by much.

Anyone else encounter these kinds of YAM failures?

Any ideas whether the later builds fixed this problem?

Thanks,

PJS

@pjs

If it started happening only lately i'd bet your ISP changed something which lets YAM choke...i don't think upgrading to the latest version would fix it (note that i'm *very* much advise you to upgrade to the latest version any time because of bug fixes and changes in the background which *might* have fixed your problem).

You could download 2.9p1, install it somewhere temporarily and try...if it still throws the error i'd file a bug report at yam.ch

What Raziel said plus you could also try simplemail and see if it has the same problem. If it does, Then you'll be certain it's not YAM's fault, otherwise you'd file the bug report.

I had pjs forward one of his problem emails to me which I downloaded in yam 2.10 with no problems so it looks like it's his ISP 'improving it's services' to unusability like so many do, yahoo mail for example.