[Mailman-Users] Some detail questions about migrating lists

[Frank Griffin]

Charles Marcus wrote:
> I'm confused... above you say that they don't allow relaying from 
> outside their network 'no matter what'... then you say you need their 
> relay service while outside their IP block...
>   

The ISP and the third-party relayer are two different companies.  I need
the relay service because the ISP won't relay from outside their own
block.  The relayer doesn't have an IP block; you sign up, get an ID,
pay, and do basic auth SMTP from anywhere.

> You appear to be saying that it is when sending from outside their IP 
> block that they do this relay filtering based on an easily forged 'From: 
> header.
>   

No, they use basic auth.

> Any ISP that doesn't allow the use of TLS for sending while outside 
> their networks is not to be trusted, so my original comment stands - I'd 
> get another ISP if possible.
>   
Unfortunately, in the US, if you want cable (as opposed to satellite or
DSL), you are at the mercy of whichever cable ISP owns the fiber to your
house.