[ALUG] Strange postfix problem

Laurie Brown laurie at brownowl.com
Thu Dec 7 12:37:12 GMT 2017


On 07/12/17 12:26, Chris Green wrote:
> On Thu, Dec 07, 2017 at 12:14:13PM +0000, Laurie Brown wrote:
>> On 07/12/17 11:59, Chris Green wrote:
>>
>> [SNIP]
>>
>>> How odd!  How is that client connecting to your system?  I.e. is it
>>> via their ADSL then in to yours, or is your postfix server 'out there'
>>> somwhere and thus not behind a NAT router?  Does the non-local IP make
>>> any sense at either their end or your end?
>>
>> It's a straight connection via their ADSL to a server "out there" and
>> not behind any kind of NAT that I know of, and the IP address is random
>> and does not match that of her desktop. It only affects this one client.
>>
> My first suspicion would fall on her ADSL connection/router then, i.e.
> the router's NAT is throwing a wobbly of some sort and putting a
> private IP address out.
> 
> Is there any chance you can get her to use a different router?

I thought of that as well, but I doubt it. All through the logs, the NAT
from her end is working fine, it seems.

She is the least technically literate person I've ever dealt with, so
there is no chance of any sense whatsoever coming from that direction!

Cheers, Laurie.
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                               Laurie Brown
                           laurie at brownowl.com
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