[CentOS] Sendmail "Queued mail for delivery"

Timothy Murphy gayleard at eircom.net
Sun Nov 22 01:16:53 UTC 2009

Alan McKay wrote:

>> 220 FBCMCL01B06.fbc.local Microsoft ESMTP MAIL Service, Version:
>> 6.0.3790.3959 ready at  Sun, 22 Nov 2009 01:02:20 +0100
> I'm confused.  This seems to be running MS mail server - what does
> that have to do with Centos?

That is the response from my ISP's mail-server.
> You've got 2 boxes?  1 is a MS mail server and the other is Centos?

I only have 1 box in this context, which is running Centos-5.4 .

Thanks for your reply.
Actually, the mail was sent after a couple of hours.

I think the reason for the delay
was that I gave my home email address in the From line.
Now I've changed it (as below) the mail is sent at once.

> Is sendmail running on Centos?


> Are you sure it is running?


> Is this the system from which you attempted to send mail?


> How did you attempt to send it?

I sent it with a tiny python program (below)

> Did you check the "mailq" command on that system?

But I checked that the files in /var/spool/* were all empty.

> Does that system have a public IP?

No, the IP address changes quite often.

> Or is it behind a firewall?


[tim at althea ~]$ cat ip.py
SENDMAIL = "/usr/sbin/sendmail"
import os
import socket
import urllib2
import sys
import time
tt = time.ctime()
ipaddr = ""
p = os.popen("%s -t -fgayleard at alice.it" % SENDMAIL, "w")
p.write("To: gayleard at eircom.net\r\n")
p.write("From: Timothy Murphy <gayleard at alice.it>\r\n")
p.write("Subject: Anghiari IP address\r\n")
p.write(ipaddr + "\r\n")

Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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