How to send e-mail w/out using port 25?

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Joined: Dec 20 2003
Posts: 20

Yo.

I just found out MSN blocks port 25 for "Spam Protection"... :Smile does anyone know of an open relay running on port 587 or something like that? I'm trying to get my RedHat 9 box online and it's awfully hard to send e-mails w/out any port 25 access. BTW... I tried SMTP.email.msn.com... It just kicked me off with a warning saying something like "MSN SMTP access is only avalable for our customers who haven't upgraded to MSN 6 or above"

Nick

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Joined: Dec 20 2003
Posts: 68
uhhh... get a copy of MSN 5.

uhhh...
get a copy of MSN 5.
:Smile

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Joined: Dec 20 2003
Posts: 20
Wouldn't Work

I don't think it'd work... I'm running linux. Wink

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rael9's picture
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Joined: Dec 26 2003
Posts: 215
Hrmmm

Honestly, I wouldn't be surprised if it is a requirement that you use the MSN software to do this. It's probably intended to do so so that you can't use Linux to use MSN effectively. I think we all know how much Microsoft LOVES Linux. Not.

To solve your problem, though, why don't you just set up your own e-mail server on your Linux box? Use Postfix or some such and roll your own.

James M. Baker
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Jon's picture
Jon
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Joined: Dec 20 2003
Posts: 2804
I was gonna post a few questi

I was gonna post a few questions about just that issue.

1) What are you using for mail on the Linux box? Are you using a simple mail client that is trying to uses POP3 or IMAP to get/send mail from the MSN server?

2) Or, are you doing as rael9 suggested and trying to use an MTA (Mail Transfer Agent) like sendmail, postfix, or one of the others for a local mail system that is trying to use MSN as an upstream mail server?

EDIT: And it seems that MS wants users to access MSN through Outlook as an HTTP mail server. Check to see if there are any Linux utils that support HTTP mail, other than a webbrowser that is... Mac

Jon.

No one should be protected from the effects of his own stupidity. - Anton Szandor LaVey in 1988 (There is a certain irony in this quote... Tongue)

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Joined: Dec 20 2003
Posts: 455
I think quite a few of the bi

I think quite a few of the big named ISP's are blocking port 25 to prevent spammers. What they don't want is someone getting an account and then setting up a relay on their own and spamming thousands of emails.

So the only port 25 traffic they will allow is their own server names. So you *could* spam from their own server but they would probably catch it pretty quick but if you tried using your own private server or someone elses server, you would probably get timeout errors or something to that effect.

When I used to do tech support for some internt products, that was an issue that we ran into all the time: Someone would buy a domain from xyz hosting and then they couldn't send mail to their new domain mail account because they were on MSN or Earthlink or whatever. The port 25 was blocked because it wasn't MSN's server.

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JetStar's picture
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Joined: Dec 20 2003
Posts: 155
This drove me nuts

So the only port 25 traffic they will allow is their own server names. So you *could* spam from their own server but they would probably catch it pretty quick but if you tried using your own private server or someone elses server, you would probably get timeout errors or something to that effect.

Ugg. That drove me nuts with my ISP, as I sooo despratly wanted to run sendmail on my sparcstation classic (besides, I don't think that it has the power to send more then one email in about 30 min, so spamming wouldn't be very practical Wink ). Most ISP's are shaping up, and starting to block these well known ports (8080 isnt so popular, hince me running http on it Wink). Cable ISP's seem to be more aggreseve, since all of the users bandwith is shared, and if you were to get slashdotted, well, you know where all of that bandwith goes...

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It must be user error.

Jon's picture
Jon
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Joined: Dec 20 2003
Posts: 2804
It might behove you to use so

It might behove you to use some other MTA than sendmail anyway. sm is full of a bunch old standards that most people never use, andd usually misconfigure. Another, leaner, modern leaning MTA might run better on an old box loike that anyway. Mac

Jon.

No one should be protected from the effects of his own stupidity. - Anton Szandor LaVey in 1988 (There is a certain irony in this quote... Tongue)

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Eudimorphodon's picture
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Joined: Dec 21 2003
Posts: 1132
"Postfix" RULEZ!

Kick your Sendmail to da curb! http://www.postfix.org

Of course, the one thing it can't do is penetrate an ISP block of port 25. ;^>

--Peace

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Joined: Dec 20 2003
Posts: 455
One thing to consider with ge

One thing to consider with getting an ISP.. If you get a "business" account (probalby quite pricy) they most likely will not block port 25 since its an actual business account.

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Joined: Dec 20 2003
Posts: 20
Now If only I could convince

Now If only I could convince my parents to spend an extra $20 per month so I can use my linux box on the web... Well, I can dream, can't I... Wink

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Joined: Dec 30 2003
Posts: 16
Sorry about resurrecting a 2

Sorry about resurrecting a 2 month old post, but, hey, I can help. If you have your own domain (mine is $8/year at names4ever.com) you can set up an account at uucpssh.org. Follow their instructions for getting it running under Postfix. Once you have it working and you have their servers as MX in your domain's DNS records, add the following to your postfix/main.cf:

relayhost = uucpssh
default_transport = uucp

That will send all the mail sent to your local SMTP server to their server over SSH, and their server will send it out. Seems to work as it should for me, though some ISPs block mail sent through it as possible spam. It also lets you host email for your domain without running it off of your connection (err, that's what UUCPSSH is supposed to be for).

I currently have 2 domains using uucpssh with Postfix on OS X as the local server. I really need to get around to writing something on how to setup UUCPSSH with OS X, I'm sure there are a lot of people that could use it. If you have any problems, email me or go to #uucpssh on FreeNode.

PS Anyone who wants a @tuxthepenguin.net address, contact me Wink

Andy