* [9fans] (no subject)
@ 2007-04-13 22:16 devon.odell
2007-04-14 3:32 ` [9fans] outbound smtp geoff
2007-04-14 11:17 ` [9fans] (no subject) W B Hacker
0 siblings, 2 replies; 3+ messages in thread
From: devon.odell @ 2007-04-13 22:16 UTC (permalink / raw)
To: 9fans
So! I finally got mail working. I'm sending this from a terminal window.
The trick was indeed that my ISP was blocking port 25. I had them turn
it on, but alas that allows people to connect internally to me -- but not
for me to connect to external mail servers. Which I think is just very
lame. They require you to set up your mailserver to relay through them.
Oh well. In either case, I was able to connect to smtp.gmail.com on
port 587. Their relay server is _not_ their MX server. While chatter on
this list has implied that's an expectation, it's not a requirement. So
they're allowed to do that.
However, this raised a question for me. It seems that the smtp= line in
/lib/ndb/local doesn't accept a dial string as valid input. Hence, I had to
manually hack remotemail to use net!smtp.gmail.com!587, since we will
only connect to port 25 by default. Should I fix this, or is this something
we're supposed to have to do?
--dho
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] outbound smtp
2007-04-13 22:16 [9fans] (no subject) devon.odell
@ 2007-04-14 3:32 ` geoff
2007-04-14 11:17 ` [9fans] (no subject) W B Hacker
1 sibling, 0 replies; 3+ messages in thread
From: geoff @ 2007-04-14 3:32 UTC (permalink / raw)
To: 9fans
It's a small change to remotemail or rewrite, and that seems to be
adequate.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] (no subject)
2007-04-13 22:16 [9fans] (no subject) devon.odell
2007-04-14 3:32 ` [9fans] outbound smtp geoff
@ 2007-04-14 11:17 ` W B Hacker
1 sibling, 0 replies; 3+ messages in thread
From: W B Hacker @ 2007-04-14 11:17 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
devon.odell@gmail.com wrote:
> So! I finally got mail working. I'm sending this from a terminal window.
> The trick was indeed that my ISP was blocking port 25. I had them turn
> it on, but alas that allows people to connect internally to me -- but not
> for me to connect to external mail servers. Which I think is just very
> lame. They require you to set up your mailserver to relay through them.
>
> Oh well. In either case, I was able to connect to smtp.gmail.com on
> port 587. Their relay server is _not_ their MX server. While chatter on
> this list has implied that's an expectation, it's not a requirement. So
> they're allowed to do that.
>
> However, this raised a question for me. It seems that the smtp= line in
> /lib/ndb/local doesn't accept a dial string as valid input. Hence, I had to
> manually hack remotemail to use net!smtp.gmail.com!587, since we will
> only connect to port 25 by default. Should I fix this, or is this something
> we're supposed to have to do?
>
> --dho
>
- Port 587 (with TLS & authentication) will increasingly be needed for smtp when
a Plan9 device is serving as a workstation or otherwise relaying by remote MX.
'Connectivity provider' ISP's are finding it essential to intercept traffic FROM
their broadband client pool directed TO any port 25 to reduce 'bot-infested
WinBox traffic (billions of such). Many ISP are required by local regulations to
do this sort of thing.
- Port 25 inbound (optionally with STARTTLS) remains needed for operating a
'public facing' MTA, with, of course, randomly selected ports (well) above 1024
for outbound to other MTA's port 25.
'public Facing mail servers will increasingly need to be in a Data Centre or
otherwise on unblocked fixed IP with apprpriate ToS, with a PTR record, and not
in the midst of a dynamic IP block.
So goeth the spam wars....
:-(
Bill Hacker
^ permalink raw reply [flat|nested] 3+ messages in thread
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2007-04-14 11:17 ` [9fans] (no subject) W B Hacker
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