here are a few lines of maillog after doing sendmail -q.
I've replaced my domain with mydomain, my internal server with myInternalServer, and my external server (which is the one in question) with my server. there is nothing in messages that coresponds to this time period, so I ommited it. top (ironically

) is at the bottom!
Apr 5 15:14:12 myserver sendmail[9266]: i35JEBnJ009266: to=limail@myDomain.com, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=37432, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <200404051914.i35JEBnJ009266@myserver.myDomain.com> Queued mail for delivery)
Apr 5 15:14:12 myserver sendmail[9328]: i35JB0nh008833: to=<dcatino@cotl.com>, delay=00:00:05, xdelay=00:00:00, mailer=esmtp, pri=30669, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=5.1.1, stat=User unknown
Apr 5 15:14:12 myserver sendmail[9328]: i35JB0nh008833: i35JECnJ009328: DSN: User unknown
Apr 5 15:14:13 myserver sendmail[8704]: i35J9VnU008704: from=<pussycat@ekchelente.com>, size=3211, class=0, nrcpts=1, msgid=<111101c41b41$56122f16$2331abfb@ekchelente.com>, proto=SMTP, daemon=MTA, relay=b71111.upc-b.chello.nl [212.83.71.111]
Apr 5 15:14:13 myserver sendmail[9330]: i35J9VnU008704: to=<stschumprer@cotl.com>, delay=00:00:14, xdelay=00:00:00, mailer=esmtp, pri=30695, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=5.1.1, stat=User unknown
Apr 5 15:14:13 myserver sendmail[9330]: i35J9VnU008704: i35JEDnJ009330: DSN: User unknown
Apr 5 15:14:13 myserver sendmail[9321]: i35JECnJ009321: to=limail@myDomain.com, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=48899, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <200404051914.i35JECnJ009321@myserver.myDomain.com> Queued mail for delivery)
Apr 5 15:14:13 myserver sendmail[9328]: i35JECnJ009328: to=<induce@sun-downer.com>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=34168, relay=mail4.surgeweb.com. [216.65.3.237], dsn=4.0.0, stat=Deferred: 420 Try later, already 601/600 users connected sorry, setting G_SMTP_MAX
Apr 5 15:14:15 myserver sendmail[9330]: i35JEDnJ009330: to=<pussycat@ekchelente.com>, delay=00:00:02, xdelay=00:00:02, mailer=esmtp, pri=34235, relay=mail4.surgeweb.com. [216.65.3.237], dsn=5.1.1, stat=User unknown
Apr 5 15:14:15 myserver sendmail[9330]: i35JEDnJ009330: SYSERR(root): hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:15 myserver sendmail[9330]: i35JEDnJ009330: i35JEDnK009330: return to sender: hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:15 myserver sendmail[9017]: i35JBunK009017: lost input channel from c-24-19-206-105.client.comcast.net [24.19.206.105] to MTA after mail
Apr 5 15:14:15 myserver sendmail[9017]: i35JBunK009017: from=<colt@chooseanother.com>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=c-24-19-206-105.client.comcast.net [24.19.206.105]
Apr 5 15:14:15 myserver sendmail[9330]: i35JEDnK009330: to=limail@myDomain.com, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=35259, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <200404051914.i35JEDnK009330@myserver.myDomain.com> Queued mail for delivery)
Apr 5 15:14:17 myserver sendmail[1515]: i35C7NG7010610: to=<johnathon.hendersonia@shuttle.de>, delay=07:06:48, xdelay=00:01:00, mailer=esmtp, pri=570407, relay=mailgw1.shuttle.de. [194.95.249.235], dsn=4.0.0, stat=Deferred: Connection timed out with mailgw1.shuttle.de.
Apr 5 15:14:17 myserver sendmail[1515]: i35FscG1027346: to=<adv@carefulchristianconsumer.com>, delay=03:19:39, xdelay=00:00:00, mailer=esmtp, pri=390407, relay=mail.carefulchristianconsumer.com., dsn=4.0.0, stat=Deferred: Connection timed out with mail.carefulchristianconsumer.com.
Apr 5 15:14:17 myserver sendmail[1515]: i35ArlC9005710: to=<fdr4mtrq@beatthebushforadate.com>, delay=08:20:30, xdelay=00:00:00, mailer=esmtp, pri=390407, relay=beatthebushforadate.com., dsn=4.0.0, stat=Deferred: Connection refused by beatthebushforadate.com.
Apr 5 15:14:17 myserver sendmail[1515]: i35FGtG1024432: to=<d.burkettos@aristotle.algonet.se>, delay=03:57:22, xdelay=00:00:00, mailer=esmtp, pri=390407, relay=aristotle.algonet.se., dsn=4.0.0, stat=Deferred: Connection timed out with aristotle.algonet.se.
Apr 5 15:14:18 myserver sendmail[8823]: i35JAwnf008823: from=<suburbia@drinkduffbeer.com>, size=3154, class=0, nrcpts=1, msgid=<100001c41b41$7b9d5093$672d546e@drinkduffbeer.com>, proto=SMTP, daemon=MTA, relay=[218.37.11.64]
Apr 5 15:14:18 myserver sendmail[9333]: i35JAwnf008823: to=<icandoit@myDomain.com>, delay=00:00:05, xdelay=00:00:00, mailer=esmtp, pri=30693, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <100001c41b41$7b9d5093$672d546e@drinkduffbeer.com> Queued mail for delivery)
Apr 5 15:14:18 myserver sendmail[1515]: i35BQEC9007908: to=<rosalind.clarkey@drinkypoo.co.uk>, delay=07:48:04, xdelay=00:00:01, mailer=esmtp, pri=390407, relay=mail4.surgeweb.com. [216.65.3.237], dsn=4.0.0, stat=Deferred: 420 Try later, already 601/600 users connected sorry, setting G_SMTP_MAX
Apr 5 15:14:19 myserver sendmail[9331]: i35JEHnJ009331: from=<iqpl41lqvcd@azteca.net>, size=4785, class=0, nrcpts=1, msgid=<jvlndvq8gz4-gcs-qot1iqpl41lqvcd@azteca.net>, proto=SMTP, daemon=MTA, relay=cs78167168.pp.htv.fi [62.78.167.168]
Apr 5 15:14:19 myserver sendmail[9336]: i35JEHnJ009331: to=<jfallat@myDomain.com>, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=30506, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <jvlndvq8gz4-gcs-qot1iqpl41lqvcd@azteca.net> Queued mail for delivery)
Apr 5 15:14:20 myserver sendmail[29894]: i35FlEG1026745: to=<bbarkerqc@gjr.paknet.com.pk>, delay=03:27:06, xdelay=00:01:00, mailer=esmtp, pri=480402, relay=gjr.paknet.com.pk. [203.135.15.194], dsn=4.0.0, stat=Deferred: Connection timed out with gjr.paknet.com.pk.
Apr 5 15:14:20 myserver sendmail[29894]: i35CmXG5013155: to=<ztv190@theentirepackage.com>, delay=06:25:46, xdelay=00:00:00, mailer=esmtp, pri=570402, relay=theentirepackage.com. [61.186.254.82], dsn=4.0.0, stat=Deferred: Connection refused by theentirepackage.com.
Apr 5 15:14:21 myserver sendmail[1515]: i35C2wCP010222: to=<9738@2486.thehappierstmailer.com>, delay=07:11:19, xdelay=00:00:03, mailer=esmtp, pri=390407, relay=2486.thehappierstmailer.com. [69.6.57.4], dsn=4.0.0, stat=Deferred: Connection refused by 2486.thehappierstmailer.com.
Apr 5 15:14:22 myserver sendmail[9334]: i35JEJnJ009334: from=<lila.rowlandpl@openface.ca>, size=746, class=0, nrcpts=1, msgid=<57ff01c41b41$5e73adc7$7915c944@2692a41>, proto=SMTP, daemon=MTA, relay=e99045.upc-e.chello.nl [213.93.99.45]
Apr 5 15:14:22 myserver sendmail[1515]: i35CGDG1011191: to=<adv@carefulchristianconsumer.com>, delay=06:58:09, xdelay=00:00:00, mailer=esmtp, pri=570407, relay=mail.carefulchristianconsumer.com., dsn=4.0.0, stat=Deferred: Connection timed out with mail.carefulchristianconsumer.com.
Apr 5 15:14:22 myserver sendmail[9343]: i35JEJnJ009334: to=<sstubbert@cotl.com>, delay=00:00:02, xdelay=00:00:00, mailer=esmtp, pri=30470, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=5.1.1, stat=User unknown
Apr 5 15:14:22 myserver sendmail[9343]: i35JEJnJ009334: i35JEMnJ009343: DSN: User unknown
Apr 5 15:14:22 myserver sendmail[9341]: i35JEMnJ009341: from=<>, size=4862, class=0, nrcpts=1, msgid=<1fw4cHQ1B00003817@myInternalServer.myDomain.com>, proto=ESMTP, daemon=MTA, relay=myInternalServer.myDomain.com [10.86.6.12]
Apr 5 15:14:23 myserver sendmail[9346]: i35JENnJ009346: from=<ehelms@myDomain.com>, size=55319, class=0, nrcpts=5, msgid=<D9BC6EFC838F3948918E39FB7580D8683FE88E@myInternalServer.myDomain.com>, proto=ESMTP, daemon=MTA, relay=myInternalServer.myDomain.com [10.86.6.12]
Apr 5 15:14:24 myserver sendmail[9180]: i35JDFnL009176: to=<dszovasix@financier.com>, delay=00:01:08, xdelay=00:01:08, mailer=esmtp, pri=30398, relay=ob-mail-com.mr.outblaze.com. [205.158.62.26], dsn=5.1.1, stat=User unknown
Apr 5 15:14:24 myserver sendmail[9346]: i35JENnL009346: from=<>, size=4936, class=0, nrcpts=1, msgid=<03pqF9kvg00003818@myInternalServer.myDomain.com>, proto=ESMTP, daemon=MTA, relay=myInternalServer.myDomain.com [10.86.6.12]
Apr 5 15:14:25 myserver sendmail[9345]: i35JEMnJ009341: to=<diverging@annuver.com>, delay=00:00:03, xdelay=00:00:02, mailer=esmtp, pri=30396, relay=mail4.surgeweb.com. [216.65.3.237], dsn=5.1.1, stat=User unknown
Apr 5 15:14:25 myserver sendmail[9345]: i35JEMnJ009341: SYSERR(root): hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:25 myserver sendmail[9345]: i35JEMnJ009341: i35JEPnJ009345: postmaster notify: hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:25 myserver sendmail[9180]: i35JDFnL009176: SYSERR(root): hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:25 myserver sendmail[9180]: i35JDFnL009176: i35JEPnJ009180: postmaster notify: hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:26 myserver sendmail[9350]: i35JENnL009346: to=<thebes@postaldigital.com>, delay=00:00:02, xdelay=00:00:02, mailer=esmtp, pri=30399, relay=postaldigital-com.mr.outblaze.com. [205.158.62.181], dsn=5.1.1, stat=User unknown
Apr 5 15:14:26 myserver sendmail[9180]: i35JEPnJ009180: to=limail@myDomain.com, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=37583, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <200404051914.i35JEPnJ009180@myserver.myDomain.com> Queued mail for delivery)
Apr 5 15:14:26 myserver sendmail[9345]: i35JEPnJ009345: to=limail@myDomain.com, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=35886, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <200404051914.i35JEPnJ009345@myserver.myDomain.com> Queued mail for delivery)
Apr 5 15:14:26 myserver sendmail[9348]: i35JENnJ009346: to=<RachelFairhurst@handleman.co.uk>,<paulcarr@handleman.co.uk>,<lucybarclay@handleman.co.uk>,<districtmanagers@handleman.co.uk>,<regionalmanagersdl@handleman.co.uk>, delay=00:00:03, xdelay=00:00:02, mailer=esmtp, pri=150838, relay=relay.star.co.uk. [62.231.131.211], dsn=2.0.0, stat=Sent (ok 1081192466 qp 1200)
Apr 5 15:14:27 myserver sendmail[9343]: i35JEMnJ009343: to=<lila.rowlandpl@openface.ca>, delay=00:00:05, xdelay=00:00:04, mailer=esmtp, pri=31770, relay=mailbox.openface.ca. [216.46.1.7], dsn=5.1.1, stat=User unknown
Apr 5 15:14:27 myserver sendmail[9343]: i35JEMnJ009343: SYSERR(root): hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:27 myserver sendmail[9343]: i35JEMnJ009343: i35JEMnK009343: return to sender: hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:27 myserver sendmail[8823]: i35JAwng008823: from=<implausible@dilemna.com>, size=2960, class=0, nrcpts=1, msgid=<011101c41b41$fd991af1$fdee29c0@dilemna.com>, proto=SMTP, daemon=MTA, relay=[218.37.11.64]
Apr 5 15:14:27 myserver sendmail[9350]: i35JENnL009346: SYSERR(root): hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:27 myserver sendmail[9350]: i35JENnL009346: i35JERnJ009350: postmaster notify: hash map "Alias0": unsafe map file /etc/aliases.db: Permission denied
Apr 5 15:14:28 myserver sendmail[9206]: i35JDRnJ009206: to=<stephan_n_wongok@ccsg.tau.ac.il>, delay=00:01:01, xdelay=00:01:00, mailer=esmtp, pri=31989, relay=mxccsg.tau.ac.il. [132.66.17.198], dsn=4.0.0, stat=Deferred: Connection timed out with mxccsg.tau.ac.il.
Apr 5 15:14:28 myserver sendmail[9352]: i35JAwng008823: to=<howlin@myDomain.com>, delay=00:00:07, xdelay=00:00:00, mailer=esmtp, pri=30684, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <011101c41b41$fd991af1$fdee29c0@dilemna.com> Queued mail for delivery)
Apr 5 15:14:28 myserver sendmail[9045]: i35JCFnL009045: from=<behaving@freebaser.com>, size=3098, class=0, nrcpts=1, msgid=<110101c41b41$34eba658$95b5e792@freebaser.com>, proto=SMTP, daemon=MTA, relay=[219.94.58.72]
Apr 5 15:14:28 myserver sendmail[9343]: i35JEMnK009343: to=limail@myDomain.com, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=32794, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <200404051914.i35JEMnK009343@myserver.myDomain.com> Queued mail for delivery)
Apr 5 15:14:28 myserver sendmail[9350]: i35JERnJ009350: to=limail@myDomain.com, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=35960, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <200404051914.i35JERnJ009350@myserver.myDomain.com> Queued mail for delivery)
Apr 5 15:14:28 myserver sendmail[9354]: i35JCFnL009045: to=<rick@myDomain.com>, delay=00:00:42, xdelay=00:00:00, mailer=esmtp, pri=30665, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <110101c41b41$34eba658$95b5e792@freebaser.com> Queued mail for delivery)
Apr 5 15:14:30 myserver sendmail[8844]: i35JB3nR008844: from=<bib@newcastle-fanatic.com>, size=3123, class=0, nrcpts=1, msgid=<001101c41b41$b5fd30ab$c15805b2@newcastle-fanatic.com>, proto=SMTP, daemon=MTA, relay=b71111.upc-b.chello.nl [212.83.71.111]
Apr 5 15:14:31 myserver sendmail[9356]: i35JB3nR008844: to=<msitarz@cotl.com>, delay=00:00:13, xdelay=00:00:00, mailer=esmtp, pri=30710, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=5.1.1, stat=User unknown
Apr 5 15:14:31 myserver sendmail[9356]: i35JB3nR008844: i35JEVnJ009356: DSN: User unknown
Apr 5 15:14:31 myserver sendmail[9357]: i35JEVnJ009357: from=<>, size=15038, class=0, nrcpts=1, msgid=<VyXx0udDL0000381f@myInternalServer.myDomain.com>, proto=ESMTP, daemon=MTA, relay=myInternalServer.myDomain.com [10.86.6.12]
Apr 5 15:14:33 myserver sendmail[9356]: i35JEVnJ009356: to=<bib@newcastle-fanatic.com>, delay=00:00:02, xdelay=00:00:02, mailer=esmtp, pri=34147, relay=mail4.surgeweb.com. [216.65.3.237], dsn=4.0.0, stat=Deferred: 420 Try later, already 648/600 users connected sorry, setting G_SMTP_MAX
Apr 5 15:14:33 myserver sendmail[8704]: i35J9VnV008704: from=<rival@doobie-lover.com>, size=3224, class=0, nrcpts=1, msgid=<001001c41b41$0ea99ce3$9b623b9c@doobie-lover.com>, proto=SMTP, daemon=MTA, relay=b71111.upc-b.chello.nl [212.83.71.111]
Apr 5 15:14:34 myserver sendmail[9361]: i35J9VnV008704: to=<stschumper@cotl.com>, delay=00:00:14, xdelay=00:00:00, mailer=esmtp, pri=30689, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=5.1.1, stat=User unknown
Apr 5 15:14:34 myserver sendmail[9361]: i35J9VnV008704: i35JEYnJ009361: DSN: User unknown
Apr 5 15:14:34 myserver sendmail[8823]: i35JAwnh008823: from=<surveys@herewegoherewegoherewego.com>, size=3219, class=0, nrcpts=1, msgid=<011101c41b41$5745a78f$7c4e9472@herewegoherewegoherewego.com>, proto=SMTP, daemon=MTA, relay=[218.37.11.64]
Apr 5 15:14:35 myserver sendmail[9363]: i35JAwnh008823: to=<honeybee@myDomain.com>, delay=00:00:05, xdelay=00:00:01, mailer=esmtp, pri=30723, relay=myInternalServer.myDomain.com. [10.86.6.12], dsn=2.0.0, stat=Sent (2.6.0 <011101c41b41$5745a78f$7c4e9472@herewegoherewegoherewego.com> Queued mail for delivery)
Apr 5 15:14:35 myserver sendmail[9359]: i35JEVnJ009357: to=<rachna@asanet.com>, delay=00:00:04, xdelay=00:00:04, mailer=esmtp, pri=30392, relay=mail.asanet.com. [206.20.14.10], dsn=2.0.0, stat=Sent (Message received: 20040405191338288.AAA2096@myserver.myDomain.com)
Apr 5 15:14:36 myserver sendmail[9361]: i35JEYnJ009361: to=<rival@doobie-lover.com>, delay=00:00:02, xdelay=00:00:02, mailer=esmtp, pri=34248, relay=mail3.surgeweb.com. [216.65.64.234], dsn=4.0.0, stat=Deferred: 420 Try later, already 31/30 users connected sorry, setting G_SMTP_MAX
[root@myserver spool]#
10636 root 20 0 2808 2672 1760 S 1.5 2.1 0:00 0 sendmail
1633 root 16 0 760 524 520 S 0.5 0.4 0:03 0 sshd
9340 root 15 0 1656 1348 324 R 0.5 1.0 0:03 0 sendmail
10548 root 15 0 1256 1256 868 R 0.5 0.9 0:00 0 top
15 root 15 0 0 0 0 DW 0.3 0.0 15:11 0 kjournald
1620 named 23 0 20176 18M 1200 S 0.3 15.2 66:15 0 named
10438 root 15 0 2416 2256 1520 S 0.3 1.7 0:00 0 sendmail
1 root 15 0 480 448 424 S 0.1 0.3 0:54 0 init
8844 root 15 0 1772 1452 868 S 0.1 1.1 0:01 0 sendmail
2 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 keventd
3 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kapmd
4 root 34 19 0 0 0 SWN 0.0 0.0 0:00 0 ksoftirqd_CPU
9 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 bdflush
5 root 15 0 0 0 0 SW 0.0 0.0 0:06 0 kswapd
6 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kscand/DMA
7 root 15 0 0 0 0 SW 0.0 0.0 0:10 0 kscand/Normal