Thanks,
.70 wasnt our mail server but the problem was that the mail server DNS PTR
record wasnt there, just asked our ISP to add this in for us....
Rob
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Eric Shanbrom
Sent: Monday, October 09, 2000 12:18 PM
To: [EMAIL PROTECTED]
Subject: Re: [IMail Forum] Sender domain must exist???
This is typical of not having your reverse lookups (PTR Record) in your DNS
set up correctly.
Assuming that 202.181.203.70 is your mail server then you can see that there
is no PTR record associated with this IP so when the receiving mail server
checks the IP to see if you exist it gets nothing back never mind a match
and refuses your mail. This is one type of SPAM protection making sure
you're trying to spoof or hijack an IP. Hope this helps
Eric S
PTR Query:
HEADER:
opcode = QUERY, id = 17951, rcode = NAME_ERR
header flags: reply, auth. answer, want recursion, recursion avail.
questions = 1, answers = 0, auth. records = 1, additional = 0
QUESTIONS:
70.203.181.202.in-addr.arpa., type = PTR, class = 1
AUTHORITY RECORDS:
-> 203.181.202.in-addr.arpa.
type = SOA, class = 1, ttl = 512, dlen = 42
nameserver = ns1.hkcix.com.
mailaddress = cmwu.hkcix.com.
serial number= 2000070602, refresh = 300, retry = 60,
expire = 1209600, minimum = 43200.
**complete**
----- Original Message -----
From: "Robert Edgar" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, October 08, 2000 10:41 PM
Subject: [IMail Forum] Sender domain must exist???
> Below is a snippet from the imail log, we are sending mail from our db to
> new users of our site and we are getting mail rejected in about 5% of
cases,
> the problem seems to be the destination mail server coming up with our
> domain doesnt exist.
>
> I believe our MX and DNS setting are OK.
>
> Does anyone know what we are doing wrong?... or what we should check...
>
> Tks
> Rob
>
> 10:06 11:18 SMTPD(401D0154) [202.181.203.69] connect 202.181.203.70 port
> 3590
> 10:06 11:18 SMTPD(401D0154) [202.181.203.70] HELO webpro03
> 10:06 11:18 SMTPD(401E0154) [202.181.203.70] HELO webpro03
> 10:06 11:18 SMTPD(401E0154) [202.181.203.70] MAIL
FROM:<[EMAIL PROTECTED]>
> 10:06 11:18 SMTPD(401E0154) [202.181.203.70] RCPT
> TO:<[EMAIL PROTECTED]>
> 10:06 11:18 SMTP-(00000081) processing C:\IMail\spool\Q4486154.SMD
> 10:06 11:18 SMTPD(401E0154) [202.181.203.70] C:\IMail\spool\D4483154.SMD
490
> 10:06 11:18 SMTP-(000000DB) Trying rexontec.com.tw (0)
> 10:06 11:18 SMTP-(00000081) 221 mx6.tomail.com.tw
> 10:06 11:18 SMTP-(00000081) finished C:\IMail\spool\Q4486154.SMD status=1
> 10:06 11:18 SMTP-(000000DB) Connect rexontec.com.tw [202.132.236.2:25] (1)
> 10:06 11:18 SMTP-(0000008F) 501 <[EMAIL PROTECTED]>... Sender domain
must
> exist
> 10:06 11:18 SMTP-(0000008F) ERR undeliverable 501 <[EMAIL PROTECTED]>...
> Sender domain must exist
> 10:06 11:18 SMTP-(0000008F) SMTP_DELIV_FAILED
> 10:06 11:18 SMTP-(0000008F) >QUIT
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> An Archive of this list is available at:
> http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
>
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
An Archive of this list is available at:
http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
An Archive of this list is available at:
http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
