[IMail Forum] Can't send to certain email addresses

[Kevin Rogers]

I get undelieverable errors where I try to send email to certain 
addresses.  I know these addresses are valid since they often go through 
and the people say they never have any problems with receiving mail 
except from our server.

I asked about this before and I wasn't sure if I needed to change the 
way our DNS records are setup or if the problem was with how the 
recipient's DNS records are setup.

Here is a sample from our log files.

Thanks.

Kevin

[192.168.0.2] connect 63.205.165.107 port 22230
02:21 11:28 SMTPD(001300DC) [63.205.165.107] EHLO rootdesign.com
02:21 11:28 SMTPD(000003EC) Authenticated [EMAIL PROTECTED], 
session treated as local.
02:21 11:28 SMTPD(001300DC) [63.205.165.107] MAIL 
FROM:<[EMAIL PROTECTED]>
02:21 11:28 SMTPD(001300DC) [63.205.165.107] RCPT TO:<[EMAIL PROTECTED]>
.......
Trying gamehelper.com (0)
.......
Connect gamehelper.com [208.5.112.230:25] (2)
02:21 11:29 SMTP-(000007E0) 220 SMTP service ready
02:21 11:29 SMTP-(000007E0) >EHLO RogersBenefit.com
02:21 11:29 SMTP-(000007E0) 250-Requested mail action okay, completed
02:21 11:29 SMTP-(000007E0) 250-SIZE 2097152
02:21 11:29 SMTP-(000007E0) 250 8bitmime
02:21 11:29 SMTP-(000007E0) >MAIL FROM:<[EMAIL PROTECTED]>
02:21 11:29 SMTP-(000007E0) 250 Requested mail action okay, completed
02:21 11:29 SMTP-(000007E0) >RCPT To:<[EMAIL PROTECTED]>
02:21 11:29 SMTP-(000007E0) 550 Requested action not taken: mailbox 
unavailable
02:21 11:29 SMTP-(000007E0) >QUIT
02:21 11:29 SMTP-(000007E0) 221 SMTP server closing transmission channel
02:21 11:29 SMTP-(000007E0) Creating message from Postmaster

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