On Thu, 2005-03-10 at 07:20 +0000, William John Murray wrote: > The [smtp.aol.com] does SOMTHING; because if I use it the > error changes to "Name server: smtp.cs.com.: host name lookup failure" > and smtp.aol.com was an alias for smtp.cs.com. This still looks like a DNS issue. What's the output of: $ dig smtp.cs.com $ dig smtp.cs.com +trace $ dig @dns-01.ns.cs.com smtp.cs.com > I then tried using this, with or without [], and I get: > > relay=smtp.cs.com. [205.188.159.185], dsn=5.6.0, stat=Data format error I wonder if your sendmail is using proper domain names. Do you have any masquerade options set in your sendmail.mc? What is the output of "hostname" on this box? > If I try the telnet idea, then 2 times out of 3 I get > "Connection closed by foreign host." > but I did manage to do: > > telnet smtp.aol.com 25 > Trying 205.188.159.185... > Connected to smtp.aol.com (205.188.159.185). > Escape character is '^]'. > 220 smtp-los01.proxy.aol.com ESMTP Sendmail 8.12.11/8.12.11; Wed, 9 Mar > 2005 18:02:14 -0500 > mail from: w.murray@xxxxxxxx > 250 2.1.0 w.murray@xxxxxxxxxxx Sender ok > rcpt to: w.murray@xxxxxxx > 250 2.1.5 w.murray@xxxxxxxxxx Recipient ok > data > 354 Enter mail, end with "." on a line by itself > Here we go > . > 554 5.7.1 (IPT:S1) http://postmaster.info.aol.com/ipt AOL has identified > this mail to be unsolicited bulk email. > quit > 221 2.0.0 smtp-los01.proxy.aol.com closing connection > Connection closed by foreign host. > > Nothing ever arrived, presumably because of the spam trap. But it looks > like this worked? > I did try to craft a non-spam mail, but never got anything past the > filter. I'm not too surprised that AOL's server is rejecting your *entirely empty* email. Try adding some headers, a blank line and a message body between "data" and "." Paul. -- Paul Howarth <paul@xxxxxxxxxxxx>