* Praveen Kumar Kalapatapu [linux-india] <26/04/01 13:51 +0530>:
> There is problem with with our sendmail it was not able to recieve
> messages from some of the hosts giving message shown below
> actual entry in our dns is like this
> orion.svrec.ernet.in A 202.141.85.7
> MX 5 202.141.85.15
Have you told orion.svrec.ernet.in that it can receive mail for itself? In
sendmail 8.11 - which you appear to be running, put orion.svrec.ernet.in
into /etc/mail/local-host-names
Also, are you sure that your DNS is like this? MX records should never
point to IP addresses or CNAMES.
mjollnir:~ dig orion.svrec.ernet.in MX
8<
;; orion.svrec.ernet.in, type = MX, class = IN
;; ANSWER SECTION:
orion.svrec.ernet.in. 23h56m31s IN MX 30 sangam.ncst.ernet.in.
orion.svrec.ernet.in. 23h56m31s IN MX 40 naveen.ncst.ernet.in.
orion.svrec.ernet.in. 23h56m31s IN MX 5 orion.svrec.ernet.in.
orion.svrec.ernet.in. 23h56m31s IN MX 10 vikram.svrec.ernet.in.
orion.svrec.ernet.in. 23h56m31s IN MX 20 milan.doe.ernet.in.
8<
> <[EMAIL PROTECTED]>:
> 202.141.85.15 does not like recipient.
> Remote host said: 551 <[EMAIL PROTECTED]>... we do not relay
> Giving up on 202.141.85.15.
> what can be the problem
There are one or two reasons for this - as above. However, they can all be
solved by seeing the top 5 FAQs at http://www.sendmail.org/faq/
In fact, that _is_ the error. Your secondary MX - vikram.svrec.ernet.in -
is 202.141.85.15. Unfortunately, it is also a CNAME. Never point MXs to
CNAMEs please ... further details in the sendmail FAQ :)
mjollnir:~ dig vikram.svrec.ernet.in
;; ANSWER SECTION:
vikram.svrec.ernet.in. 23h58m44s IN CNAME svrec.ernet.in.
svrec.ernet.in. 23h58m44s IN A 202.141.85.15
-s
--
Suresh Ramasubramanian <--> mallet <at> efn <dot> org
EMail Sturmbannfuhrer, Lower Middle Class Unix Sysadmin
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