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 ([email protected]) wrote: > I am sending an email from my machine devcentos5x64. > the transcript below (hangs for 60 seconds) at the line: > MAIL From:<[email protected]> SIZE=56 > [email protected] > > 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 [email protected] > [email protected]... 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:<[email protected]> SIZE=56 > [email protected] > 250 2.1.0 <[email protected]>... Sender ok > >>> RCPT To:<[email protected]> > >>> DATA > 250 2.1.5 <[email protected]>... Recipient ok > 354 Enter mail, end with "." on a line by itself > >>> . > 250 2.0.0 o18F2FMV002336 Message accepted for delivery > [email protected]... Sent (o18F2FMV002336 Message accepted for delivery) > Closing connection to [127.0.0.1] > >>> QUIT > 221 2.0.0 devcentos5x64.msgnet.com closing connection > [r...@devcentos5x64 src]# > > _______________________________________________ > CentOS mailing list > [email protected] > http://lists.centos.org/mailman/listinfo/centos -- Student to Teacher: Sir, what's an oxymoron? .... Teacher to Student: "Microsoft Works". | |0| | Jobst Schmalenbach, [email protected], 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 _______________________________________________ CentOS mailing list [email protected] http://lists.centos.org/mailman/listinfo/centos
