On 13 Jan 2020, at 07:58, Jaroslaw Rafa wrote:
> You were forced to use ports 587 or 465 for outgoing mail.
Yes, that is a sensible ISP.
--
And she was lying in the grass And she could hear the highway
breathing And she could see a nearby factory She's making sure
she is not
Dnia 13.01.2020 o godz. 15:50:59 Gerben Wierda pisze:
> Some ISP’s even go further my catching all traffic to port 25 to any
> system outsuide their network (other than to their own MTAs) blocking it
> or directing that to their own MTA. That is because of course one hacked
> system in their
Some ISP’s even go further my catching all traffic to port 25 to any system
outsuide their network (other than to their own MTAs) blocking it or directing
that to their own MTA. That is because of course one hacked system in their
network means an open relay from their network and that is bad
Presumably they know what your IP is because they gave it to you. That’s the
authorization.
I am willing to bet that if you tried to send mail from off network you
wouldn’t be able to without doing SMTP auth
Sent from my iPhone
> On Jan 12, 2020, at 16:15, Wesley Peng wrote:
>
>
> Hello
Hello
My ISP email even doesn’t require SMTP AUTH. Will they be acting as open
relay? How to stop abuse of outgoing mail?
Regards
