09-12-2017
Quote:
Originally Posted by
drysdalk
Hi,
Sorry for the delay in replying - glad you’ve gotten your Sendmail config generating correctly now at least. I’m afraid I can’t really help you much further though, sorry. I’ve got no experience myself in setting up Sendmail to do what you’re trying to do, as I’ve never had to set up a Sendmail box to do quite what you’re trying to do.
From some Googling it seems it’s certainly possible to get Sendmail to talk to an MSA rather than an MTA and authenticate against it using the authinfo mechanism previously discussed, but as you say you might need to get TLS and other things besides working for this to operate correctly. Perhaps others who have gone down this road and are reading this thread could advise you on how to proceed, if this is really something you absolutely have to do.
On that subject, though: again, is there a reason you have to do this, and pass the mail on to a server that is normally used for talking to mail clients and whatnot ? Why can’t you just straight send this mail to its correct destination from your local server, without a relay or smart host or anything else in the way ? Or alternatively, is there not a mail server on site that already is set up to do e-mail correctly that you can just use as your smart relay, saving yourself all this trouble ?
Quote:
Or alternatively, is there not a mail server on site that already is set up to do e-mail correctly that you can just use as your smart relay, saving yourself all this trouble ?
Our domain is techx.com however
does not have any smtp service like smtp.techx.com. Infact techx.com domain is actually provided by same zoho.com.
Quote:
Why can’t you just straight send this mail to its correct destination from your local server, without a relay or smart host or anything else in the way ?
I m not sure how to setup using this approach. Any guide / link with step by step approach for Linux centos 7 in this regards would be appreciated. All i need is the outgoing emails from my linux server to work.
Last edited by mohtashims; 09-13-2017 at 12:12 PM..
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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)