Underscores can be valid but they were made an acceptable character because of SRV records. Still someone could have a mailserver with an _ in the domain. (I think anyway.)
 

--
Joshua Levitsky, MCSE, CISSP
System Engineer
Time Inc. Information Technology
[5957 F27C 9C71 E9A7 274A 0447 C9B9 75A4 9B41 D4D1]
----- Original Message -----
Sent: Tuesday, January 20, 2004 1:28 PM
Subject: [Declude.JunkMail] Underscore in domain..

Hi;
 
Can a domain name have underscore in it?
 
If not then we should really be in a position not to accept email from domain names that are invalid...
 
A test that checks for such validity would be great considering we can NOT filter on the domain name alone.
 
 
Kami
 
==========
X-IMAIL-SPAM-DNSBL: (SPAMCOP,51970536,127.0.0.2)
X-IMAIL-SPAM-DNSBL: (BLARS,51970536,127.1.0.1)
X-IMAIL-SPAM-VALHELO: (51970536)
X-RBL-Warning: HELOBOGUS: Domain see_below.com has no MX or A records [0301].
X-RBL-Warning: IPNOTINMX:
X-RBL-Warning: NOLEGITCONTENT: No content unique to legitimate E-mail detected.
X-RBL-Warning: MAILFROM: Domain see_below.com has no MX or A records [0301].
X-RBL-Warning: COUNTRY: Message failed COUNTRY test (line 189, weight 1)
X-RBL-Warning: FILTER-HEADER-XMAIL: Message failed FILTER-HEADER-XMAIL test (line 45, weight 20)
X-RBL-Warning: FILTER-SPAM-HTML: Message failed FILTER-SPAM-HTML test (line 193, weight 5)
X-Declude-Sender: Please_don'[EMAIL PROTECTED] [203.125.58.130]
X-Declude-Spoolname: D44b4031901e80924.SMD
X-Note: ==================================================================
X-Note: Spam Score: 58 [BLOCKED ON 20+ & DELETED ON 60+]
X-Note: Scan Time: 10:10:08 on 01/20/2004
X-Note: Spool File: D44b4031901e80924.SMD
X-Note: Server Name: see_below.com
X-Note: SMTP Sender: Please_don'[EMAIL PROTECTED]
X-Note: Reverse DNS & IP: bb-203-125-58-130.singnet.com.sg [203.125.58.130]
============

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