[Mailman-Users] Not receiving mail

[Somik Raha]

Hi,
    I have a system running sendmail and Mailman. I followed all the installation instructions faithfully, and yet, mails sent to a list do not get delivered to recipients. 
    I ensured that the list entry exists in /etc/aliases, issued newaliases, but to no effect.

    Here's what /var/log/maillog says when a mail is sent to the list "internal":

Dec 15 15:33:00 mail imapd[22081]: Command stream end of file, while reading line user=somik host=c-24-7-97-213.client.comcast.net [24.7.97.213]
Dec 15 15:33:05 mail sendmail[22082]: hBFKX5wP022082: from=<somik at industriallogic.com>, size=1392, class=0, nrcpts=1, msgid=<014c01c3c37e$98fcdd30$0300a8c0 at LOU>, proto=SMTP, daemon=MTA, relay=smtp018.mail.yahoo.com [216.136.174.115]
Dec 15 15:33:05 mail sendmail[22085]: hBFKX5wP022082: to=<internal at industriallogic.com>, ctladdr=<somik at industriallogic.com> (502/501), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31619, dsn=2.0.0, stat=Sent

I've been unable to figure this out - any pointers will be appreciated.

Thanks in advance.

Regards,
Somik