Solved

Relaying denied. IP name lookup failed

Posted on 2007-11-30
3
2,904 Views
Last Modified: 2013-12-17
I'm getting the below error and I've been on the phone with Red Hat for over 2 hours and they cannot figure it out. It seems like a simple question, wWhy is relaying being denied? Here's the entry in the /var/log/maillog

Nov 30 08:58:35 mammoth sendmail[13583]: lAUGwYMT013583: ruleset=check_rcpt, arg1=<user@gmail.com>, relay=[66.51.204.153], reject=550 5.7.1 <user@gmail.com>... Relaying denied. IP name lookup failed [66.51.204.153]

The domain name is geoffandcindy.com and it has a valid MX record.  The local-host-names has the domain in it 'geoffandcindy.com' and sendmail.mc has the following special options enabled along with the normal other ones:
define(`confAUTH_OPTIONS', `A p y')dnl
TRUST_AUTH_MECH(`LOGIN PLAIN')dnl
define(`confAUTH_MECHANISMS', `LOGIN PLAIN')dnl
define(`confTO_IDENT', `0')dnl
FEATURE(delay_checks)dnl
FEATURE(`no_default_msa',`dnl')dnl
FEATURE(`smrsh',`/usr/sbin/smrsh')dnl
FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl
FEATURE(use_ct_file)dnl
0
Comment
Question by:Geoff Millikan
  • 2
3 Comments
 
LVL 21

Expert Comment

by:robocat
ID: 20392219

Why don't you add 66.51.204.153 to your reverse DNS lookup zone ?
0
 

Author Comment

by:Geoff Millikan
ID: 20393915
Mail will be sent from many IP addresses since our users travel...  So IP address stuff will not work.
0
 
LVL 21

Accepted Solution

by:
robocat earned 500 total points
ID: 20394299


Try

define(`confAUTH_OPTIONS', `A y')dnl

or

define(`confAUTH_OPTIONS', `A')dnl
0

Featured Post

What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

Join & Write a Comment

The Microsoft Exchange server database may become damaged or corrupted due to many reasons, such as system failure. When this happens, it is usually urgent to restore the system to a stable and working state. There are different symptoms and causes …
Marketers need statistics and metrics like everybody else needs oxygen. In this article we explain how to enable marketing campaign statistics for Microsoft Exchange mail.
In this video we show how to create an Accepted Domain in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Ac…
To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Servers >> Certificates…

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now