Sorry Scott for changing the logs, the correct syntax is:

06:25 09:28 SMTP-(000006E0) Trying servientrega.com.co (0)
06:25 09:28 SMTP-(000006E0) Connect servientrega.com.co[209.88.12.34] (1)
06:25 09:28 SMTP-(000006E0) 220 servweb.servientrega.com.co GroupWise
Internet Agent 5.5.5 Ready (C)1993, 1998 Novell, Inc.
06:25 09:28 SMTP-(000006E0) >EHLO geo.net.co
06:25 09:28 SMTP-(000006E0) 500 Syntax error
06:25 09:28 SMTP-(000006E0) >HELO geo.net.co
06:25 09:28 SMTP-(000006E0) 504 DNS verification of sending machine failed:
no mail will be accepted
06:25 09:28 SMTP-(000006E0) SMTP_DELIV_FAILED
06:25 09:28 SMTP-(000006E0) >QUIT


Can you explain me a little this part?

> Your mailserver has a reverse DNS entry, and geo.net.co has an A
> record.  Although they do not match, they are on the same Class C range.



----- Original Message -----
From: "R. Scott Perry" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, June 25, 2002 10:16 AM
Subject: Re: [IMail Forum] Need help with DNS verification


>
> >Well, my SMTP is sending mails to this server (GroupWise Internet Agent
> >5.5.5) and when helo starts i get this in my logs
> >
> >06:25 09:28 SMTP-(000006E0) Trying servientrega.**** (0)
>
> servientrega.**** isn't a valid domain.
>
> >06:25 09:28 SMTP-(000006E0) Connect servientrega.**** [209.88.12.***] (1)
>
> Yet you can connect to it, so it appears that you are "munging" the
> domain.  We can NOT help you figure out if there is a DNS issue (as per
> your subject) without knowing the domain you are trying to send to.
>
> >06:25 09:28 SMTP-(000006E0) >HELO geo.net.co
> >06:25 09:28 SMTP-(000006E0) 504 DNS verification of sending machine
> >failed: no mail will be accepted
> >
> >Is it there any error on my SMTP ?
>
> That error message could mean anything; they do not explain what the error
> is.  Ironically, the only way to find out what the problem is is to
contact
> them, but you can't do that!
>
> Your mailserver has a reverse DNS entry, and geo.net.co has an A
> record.  Although they do not match, they are on the same Class C range.
>
> It sounds like servientrega.**** has a DNS problem on their end, which
> would explain why the DNS verification failed.
>
> Note also that it is not RFC-compliant to reject mail with invalid
> HELO/EHLO text.  In these days, lots of people do it (such as rejecting
> "HELO $domain") to reduce spam, but in this case it looks like an error on
> their end.
>
>                                                     -Scott
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> Declude: Anti-virus, Anti-spam and Anti-hijacking solutions for
> IMail.  http://www.declude.com
>
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>
>
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>


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