[ubuntu-za] Thunderbind resolveip issue

[Robin Bownes]

Hi.

Not sure if this is the same issue, a related issue, or something 
completely different, but I'll share just in case. This happened to me 
last Friday (3 Nov) when I was trying to send a really urgent email. (of 
course)

When trying to send the email, I got a pop-up with a message that 
indicated that a server I was trying to access/use for sending, had been 
listed as a spam server.

/An error occurred while sending mail. The mail server responded:
"JunkMail rejected - ([192.168.1.108]) [105.186.218.31]:49698 is in an RBL:
https://www.spamhaus.org/query/ip/105.186.218.31".
  Please check the message recipient "d***@st********.co.za" and try again./

At first I thought it was the Afrihost server on which my domain/email 
is hosted, since I've had problems with that before. But it wasn't that. 
Turns out, the server listed as being at fault was the Telkom server to 
which I was connected for my ADSL connection. However, further 
investigation revealed that the server was not actually listed.

Much research later, I found that  the problem was because I'd not set 
up my SMTP server options with "connection security" options. I'd never 
needed it before. Suddenly, as of last week, it began throwing up the 
above error message.

I set SMTP connection security to STARTTLS for all my addresses, and the 
problem was instantly solved.

Hope this is of some help.

Robin


On 04/11/2017 15:01, Lee Sharp wrote:
> On 11/04/2017 01:18 AM, Charl Wentzel wrote:
>> Hi Guys
>>
>> I've been noticing an strange issue and found an accidental band-aid, 
>> but I'm baffled.
>
> Next time it happens, try to check for new e-mail and then send. 
> (After all, when you restart, it first checks for new e-mail.)  It 
> could just be an authentication issue.  What authentication are you 
> using for it?
>
>             Lee
>

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