May be I did not express myself correctly. what is happening is ever since the net Admin decided to use DNS to resolve names, the
command is not working anymore, so the servers are not sending email alerts to administrators
Hi all,
We've an application that is for recording our daily services to clients, and it has mailing option for sending email to any account to inform them about client requests ,but at this time the mailing part doesn't work.
So i want to know that this WS should be assigned as mail server for... (2 Replies)
hi ,
before installing dns on my server, all was ok
I was able to send message from aix to my lotus notes server thanks to this command:
mail -v aaaaaaaaaa@bbbbbbb.fr
in my /etc/hosts , there was
xx.xx.xx.xx lotus
xx.xx.xx.xx server name
in my... (3 Replies)
I recieve 553 5.3.4 mail.xxxx.com config error: mail loops back to me (MX problem?) when I try to send email from client . The message reaches the server and dies there
I'm using sendmail 8.12.9 on OpenBSD 3.3. I can check mail on client with no problem
Thanks for any help (5 Replies)
It seems that mail from our servers are going through a third party security mail scanner (offsite),
due the the mx records specified on our internal and external DNS servers.
However, our internal user to user email does not go through the third party security mail scanner.
I discovered... (2 Replies)
Hello all,
I've a very strange thing hapenning in my Sys, I've configured the IP, DNS eveything for my internat connection, but Im only able to browse Redhat.com websites.
I cant open anyother site!!! :eek:
Im sure the internet is configured 'coz it displays the list of avail updates for... (11 Replies)
Hi Chaps and Chappettes,
I've had a short period of time recently to learn and implement DNS cache-only in our organisation. Trouble is, according to my tcpdumps, the amount of traffic on port 53 has increased. This is of course the exact opposit of the desired effect. Would y'all mind looking... (2 Replies)
Hello fellow unix dudes, I have a question on DNS.
Basically the error is my domain.com server can not send email to my
mail.domain.com server.
I have a virtual server with one IP say 192.10.11.12 and a mail server with
iP 172.4.5.6
When the virutal server on ip 192.10.11.12 was setup,... (0 Replies)
Dear Concern,
As per below article, we have configured qmail in our system.
THE LINUX STUFF: qmail Installation Steps on Linux
But when we try to send any mail in own domain, got below error message. Please advise.
Apr 17 17:01:20 BLAUDITSCPTEST sendmail: alias database /etc/aliases... (0 Replies)
Discussion started by: makauser
0 Replies
LEARN ABOUT DEBIAN
testmxlookup
TESTMXLOOKUP(1) Double Precision, Inc. TESTMXLOOKUP(1)NAME
testmxlookup - Look up mail relays for a domain
SYNOPSIS
testmxlookup [@ip-address] [--dnssec] [--udpsize n] {domain}
DESCRIPTION
testmxlookup lists the names and IP addresses of mail relays that receive mail for the domain. This is useful in diagnosing mail delivery
problems.
testmxlookup sends a DNS MX query for the specified domain, followed by A/AAAA queries, if needed. testmxlookup lists the hostname and the
IP address of every mail relay, and its MX priority.
DIAGNOSTICS
The error message "Hard error" indicates that the domain does not exist, or does not have any mail relays. The error message "Soft error"
indicates a temporary error condition (usually a network failure of some sorts, or the local DNS server is down).
OPTIONS
@ip-address
Specify the DNS server's IP address, where to send the DNS query to, overriding the default DNS server addresses read from
/etc/resolv.conf.
"ip-address" must be a literal, numeric, IP address.
--dnssec
Enable the DNSSEC extension. If the DNS server has DNSSEC enabled, and the specified domain's DNS records are signed, the list of IP
addresses is suffixed by "(DNSSEC)", indicating a signed response.
This is a diagnostic option. Older DNS servers may respond with an error, to a DNSSEC query.
--udpsize n
Specify that n is the largest UDP packet size that the DNS server may send. This option is only valid together with "--dnssec". If
"--dnssec" always returns an error, try "--udpsize 512" (the default setting is 1280 bytes, which is adequate for Ethernet, but other
kinds of networks may impose lower limits).
SEE ALSO courier(8)[1], RFC 1035[2].
AUTHOR
Sam Varshavchik
Author
NOTES
1. courier(8)
[set $man.base.url.for.relative.links]/courier.html
2. RFC 1035
http://www.rfc-editor.org/rfc/rfc1035.txt
Courier Mail Server 11/18/2011 TESTMXLOOKUP(1)