One of the security features of sendmail is the REVERSE lookup.
If sendmail cant reverse lookup and the entries dont match, no mail.
You didnt specify whether devcentos5x64.msgnet.com is an internal
host and there is some other mailserver higher up the stream.
If so, use:
define(`SMART_HOST', `MAIL_SERVER_UPSTREAM')
This will solve many problems for a lot of setups.
Jobst
On Mon, Feb 08, 2010 at 10:14:29AM -0500, Jerry Geis (geisj@xxxxxxxxxxxxxxx) wrote:
> I am sending an email from my machine devcentos5x64.
> the transcript below (hangs for 60 seconds) at the line:
> MAIL From:<root@xxxxxxxxxxxxxxxxxxxxxxxx> SIZE=56
> AUTH=root@xxxxxxxxxxxxxxxxxxxxxxxx
>
> The email succeeds - but I am trying to figure out the 60 second delay.
> Neither email server is busy. Nothing is waiting.
>
> the DNS on both machines point to the same nameserver. The DNS responds
> very fast when looking up server names.
>
> What else can I look for to remove the slowness or delay?
>
> jerry
>
> ------------------------------------
>
> date | mail -v -v -v -v geisj@xxxxxxxxxxxxxxx
> geisj@xxxxxxxxxxxxxxxxxx Connecting to [127.0.0.1] via relay...
> 220 devcentos5x64.msgnet.com ESMTP Sendmail 8.13.8/8.13.8; Mon, 8 Feb
> 2010 10:02:15 -0500
> >>> EHLO devcentos5x64.msgnet.com
> 250-devcentos5x64.msgnet.com Hello localhost [127.0.0.1], pleased to
> meet you
> 250-ENHANCEDSTATUSCODES
> 250-PIPELINING
> 250-8BITMIME
> 250-SIZE
> 250-DSN
> 250-ETRN
> 250-AUTH DIGEST-MD5 CRAM-MD5
> 250-DELIVERBY
> 250 HELP
> >>> MAIL From:<root@xxxxxxxxxxxxxxxxxxxxxxxx> SIZE=56
> AUTH=root@xxxxxxxxxxxxxxxxxxxxxxxx
> 250 2.1.0 <root@xxxxxxxxxxxxxxxxxxxxxxxx>... Sender ok
> >>> RCPT To:<geisj@xxxxxxxxxxxxxxx>
> >>> DATA
> 250 2.1.5 <geisj@xxxxxxxxxxxxxxx>... Recipient ok
> 354 Enter mail, end with "." on a line by itself
> >>> .
> 250 2.0.0 o18F2FMV002336 Message accepted for delivery
> geisj@xxxxxxxxxxxxxxxxxx Sent (o18F2FMV002336 Message accepted for delivery)
> Closing connection to [127.0.0.1]
> >>> QUIT
> 221 2.0.0 devcentos5x64.msgnet.com closing connection
> [root@devcentos5x64 src]#
>
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> http://lists.centos.org/mailman/listinfo/centos
--
Student to Teacher: Sir, what's an oxymoron? .... Teacher to Student: "Microsoft Works".
| |0| | Jobst Schmalenbach, jobst@xxxxxxxxxxxxxx, General Manager
| | |0| Barrett Consulting Group P/L & The Meditation Room P/L
|0|0|0| +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia
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