Re: [exim4] mixed up about terminology
On 10/5/2014 4:38 PM, Brian wrote:
> On Sun 05 Oct 2014 at 16:16:22 -0400, Jerry Stuckle wrote:
>
>> On 10/5/2014 12:01 PM, Harry Putnam wrote:
>>>
>>> I'm pretty sure I'm leaving out some major piece of the smtp puzzle
>>> but not at all sure what it might be.
>>
>> Two things here:
>>
>> First of all, are you sure your ISP allows connections to Port 25 on
>> other hosts? Many ISPs (especially residential accounts) are now
>> blocking such attempts due to trojans creating spam relays.
>
> You may not have noticed but the OP is attempting to connect to machines
> on his own network and to his ISP's mail server. Please try not to bring
> confusion to an already sorted situation.
>
I KNOW he's trying to configure for his own network. I also KNOW it is
connected to the internet. My advice stands - a misconfigured exim
server can quickly become a SPAM source. Spammers all over the world
are looking for just such servers, and quickly spread the word around.
>> Second - be *very careful* in configuring Exim. Misconfiguration can
>> easily allow your system to become an open relay for spammers. Such an
>> operation at a minimum can get your IP (and ISP) a bad reputation, and
>> at a maximum can get your account cancelled.
>>
>> Exim can be configured to be safe, but it's not necessarily straightforward.
>
> It's very straightforward when it is known what network exim is on.
>
>
Not necessarily. Thinking it is very straightforward is what leads to
open relays. Especially when you don't know what you're doing.
Jerry
Reply to: