I have the same problem, been fine until Tuesday (24th) then I can not send.
Looking at the net it would seem there are thousands of others with the same
problem and as far as I can find there is no solution, so perhaps the more it
is reported the quicker microsoft will come up with a solution!
>> My default for sending / receiving mail is btinternet.com
>> (mail.btinternet.com as both POP3 and SMTP)
>> I can't send from Outlook using that any more (Though I used to).
>> Error is something like "Timed out waiting for smtp server response"
>>
>> I also have a vodafone.net account, from which I can send.
>I have the same problem, been fine until Tuesday (24th) then I can not
>send.
[quoted text clipped - 3 lines]
> it
> is reported the quicker microsoft will come up with a solution!
I just have to ask... why are you so sure it's Microsoft's problem, since,
as Bob pointed out, he can send from the same machine using a different
account? That would tell me it isn't necessarily a Microsoft problem.
And, fwiw, Microsoft doesn't really truly read the newsgroups. If you want
to be 100% sure your problem is reported, call them.
That said, I believe btinternet also listens on port 587, so try changing
the SMTP port to that.

Signature
f.h.
BobH - 28 Jul 2007 16:36 GMT
That does seem to have fixed it. (Sorry if that sounds "not so sure", but
that is probably my reaction to things I know little about).
Changed an smtp number in Account settings /<account name>/more settings
/advanced from 25 to 587 and it all sprang back into life.
Thank you, f.h. - It worked for me!
Bob
> >> My default for sending / receiving mail is btinternet.com
> >> (mail.btinternet.com as both POP3 and SMTP)
[quoted text clipped - 20 lines]
> That said, I believe btinternet also listens on port 587, so try changing
> the SMTP port to that.
BobH - 28 Jul 2007 16:48 GMT
To test the fix, I re-tried my wife's btinternet account without changing it
- still didn't work.
Changed it to 587 and it was fine.
So thank you - enthusiastically!
Can you tell me in layman's terms what happened? What it was I changed? Was
it the port?
How come the vodafone one works (on 25)?
What is the meaning of life, the universe, everything? (Yes - I know...)
Bob
> >> My default for sending / receiving mail is btinternet.com
> >> (mail.btinternet.com as both POP3 and SMTP)
[quoted text clipped - 20 lines]
> That said, I believe btinternet also listens on port 587, so try changing
> the SMTP port to that.
F. H. Muffman - 29 Jul 2007 04:19 GMT
> So thank you - enthusiastically!
> Can you tell me in layman's terms what happened? What it was I changed?
> Was
> it the port?
> How come the vodafone one works (on 25)?
Vodafone works on 25 because that's the default SMTP port which should work,
even with BT. Why BT doesn't, I honestly don't know. If I was on bt, I'd
look at the actual network traffic to see why it's failing, but I'm not, so
I can't.

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f.h.