richard wrote:
> On Mon, 23 Jan 2012 13:47:32 -0500, richard wrote:
>
>> What am I missing? Both username and password are correct.
>> I have verified on the web based mail side.
>> So I know it is the client, not the server.
>> I can receive, just can't send.
>>
>> Was working just fine until I got attacked this morning from zillions of
>> bounce backs from a spammer.
>>
>> I sent an email out from the web based client and that worked just fine.
>
> port IS definitely blocked by at&t
> tried other ports and it still won't send.
Try a packet sniffer.
http://en.wikipedia.org/wiki/Wireshark
Works best if the transaction isn't encrypted. If the setup uses
plaintext, you can even see the username and password being sent
to the server.
When you get a single error number from some tool on your
computer, sometimes the packet sniffer can shed a bit more
light on what is happening.
Paul