WTH! Earthlink blocks port 25 to other SMTP servers???

GTaudiophile

Lifer
Oct 24, 2000
29,767
33
81
I'm trying to send e-mail on Outlook 2002 through 1and1.com's SMTP server, but I keep getting an error message. So, I look into the "E-mail Troubleshooting" section of 1and1.com's FAQ, and Earthlink is listed as one of the ISPs that blocks port 25 to non-Earthlink SMTP servers.

WTH! :|
 

dexter333

Senior member
Oct 9, 2000
442
0
0
What's wrong with them blocking access to other SMTP servers? There's no need for it since Earthlink most likely allows you to send email from any email address using their servers as long as you're on their network.
 

Triumph

Lifer
Oct 9, 1999
15,031
14
81
what does the smtp server matter? i always use my provider's server for outgoing mail, and my school server for incoming mail.
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
167
106
Originally posted by: SagaLore
It's the stop the widespread spamming. Good for them. :beer:
It also stops most email worms, which also have their own SMTP engine.
 

mpitts

Lifer
Jun 9, 2000
14,732
1
81
Originally posted by: GTaudiophile
So I can't send through 1and1.com is what you all are saying?

Not unless they have an smtp server that runs on a port other than 25.

You are best off either running your own server on a non-standard port or using earthlink's SMTP server to send mail.
 

kenshorin

Golden Member
Apr 14, 2001
1,160
0
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Originally posted by: mpitts
Almost all large ISPs do this.

Yep... unless you are connected to their network, you generally aren't allowed by an ISP (or anyone for that matter) to send through their SMTP. Earthlink probably doesn't need to block access, most ISPs do it for themselves.

Definition of an open relay
 

Hubris

Platinum Member
Jul 14, 2001
2,749
0
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There's no difference if you DO send it through Earthlink's server, except for the headers. It'll still look like it came from your 1and1.com address, it just filtered through Earthlink's server.
 

isekii

Lifer
Mar 16, 2001
28,578
3
81
I can't send emails out when I use my Earthlink address :(
I tried sending out through my school address, using earthlink headers, but it's a no go :(
I just use my MSN.
 

MrBond

Diamond Member
Feb 5, 2000
9,911
1
76
Wouldn't requiring SMTP server authentication do essentially the same thing? Spammers can't use it for an open relay (unless they guess a password, which is problably easier then it sounds with Earthlink customers), and the password is encrypted in the OS, so viruses can't extract it to spam their email messeges out.
 

hans007

Lifer
Feb 1, 2000
20,212
18
81
Originally posted by: MrBond
Wouldn't requiring SMTP server authentication do essentially the same thing? Spammers can't use it for an open relay (unless they guess a password, which is problably easier then it sounds with Earthlink customers), and the password is encrypted in the OS, so viruses can't extract it to spam their email messeges out.

yes, i think this is true.


i use time warner cable, but can still use my ucla smtp servers since they use smtp authentication.
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
167
106
Originally posted by: MrBond
Wouldn't requiring SMTP server authentication do essentially the same thing? Spammers can't use it for an open relay (unless they guess a password, which is problably easier then it sounds with Earthlink customers), and the password is encrypted in the OS, so viruses can't extract it to spam their email messeges out.
That would prevent abuse of "good" SMTP servers, but it doesn't fix the problem of spammers or worms.