nanog mailing list archives
Re: Yahoo! Mail Issue
From: Brielle Bruns <bruns () 2mbit com>
Date: Mon, 11 Apr 2011 22:54:01 -0600
On 4/11/11 10:47 PM, Matthew Petach wrote:
mpetach@opstools1:~> telnet 219.90.94.56 25 Trying 219.90.94.56... Connected to static-host-219-90-94-56.tri.ph. Escape character is '^]'. ehlo yahoo.com 554 SMTP synchronization error Connection closed by foreign host. mpetach@opstools1:~> I imagine when port 25 stops giving 5xx failure message back, mail reception might improve. ^_^;
Works fine for me, your getting an error because your trying to send a command before receiving the first 220, aka RFC violation. As long as you connect, wait a moment without trying to send a command, your fine.
telnet 219.90.94.56 25 Trying 219.90.94.56... Connected to static-host-219-90-94-56.tri.ph. Escape character is '^]'.220 stluke.com.ph ESMTP MailCleaner (Community Edition 2010 beta 3) Tue, 12 Apr 2011 12:51:38 +0800
My systems do it too if you try to send a command before waiting for the 220s to finish:
telnet mail.sosdg.org 25 Trying 2620:64:0:1::2... Connected to mail.sosdg.org. Escape character is '^]'. 554 SMTP synchronization error Connection closed by foreign host.Its an effective antispam method, because bots rarely bother to wait. They just blast away
-- Brielle Bruns The Summit Open Source Development Group http://www.sosdg.org / http://www.ahbl.org
Current thread:
- Yahoo! Mail Issue Nathanael C. Cariaga (Apr 11)
- Re: Yahoo! Mail Issue Matthew Petach (Apr 11)
- Re: Yahoo! Mail Issue Brielle Bruns (Apr 11)
- Re: Yahoo! Mail Issue Matthew Petach (Apr 11)
- Re: Yahoo! Mail Issue Nathanael C. Cariaga (Apr 11)
- Re: Yahoo! Mail Issue Christopher Balmain (Apr 12)
- Re: Yahoo! Mail Issue Nathanael C. Cariaga (Apr 12)
- Re: Yahoo! Mail Issue Matthew Petach (Apr 12)
- Re: Yahoo! Mail Issue Nathanael C. Cariaga (Apr 12)
- Re: Yahoo! Mail Issue Suresh Ramasubramanian (Apr 12)
- Re: [v6z] Re: Yahoo! Mail Issue Scott Howard (Apr 16)
- Re: Yahoo! Mail Issue Brielle Bruns (Apr 11)
- Re: Yahoo! Mail Issue Matthew Petach (Apr 11)
- Re: Yahoo! Mail Issue Jay Ashworth (Apr 12)