I just changed ISPs, to Flashcom, and have noticed that they seem to have a strange email processing system. I have a potato box using exim as my email MTA. The email arrangement is pretty standard for ISP email, I get mail via POP3 using fetchmail from a Flashcom POP3 server and send mail using SMTP to a different (at least hostname) Flashcom SMTP server.
I have been able to send some email successfully through their outgoing SMTP server. But last night I received 3 rejected messages from their mail server. The text of one of the messages follows: ------------------------------------------------------------------------- Date: Wed, 29 Nov 2000 21:51:43 -0800 From: Mail Delivery System <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Mail delivery failed: returning message to sender This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. The following address(es) failed: [EMAIL PROTECTED]: SMTP error from remote mailer after RCPT TO:<[EMAIL PROTECTED]>: host smtp.flashcom.net.criticalpath.net [209.228.150.115]: 553 To send mail, first check your mail with a valid POP account; this prevents unauthorized SPAM relaying. (#5.7.1) ------ This is a copy of the message, including all the headers. ------ Return-path: <[EMAIL PROTECTED]> Received: from sawitt by electra.flashcom.net with local-esmtp (Exim 3.12 #1 (Debian)) id 141Mcw-00011z-00; Wed, 29 Nov 2000 21:51:26 -0800 Date: Wed, 29 Nov 2000 21:51:26 -0800 (PST) From: Steve Witt <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Re: Address verification request In-Reply-To: <[EMAIL PROTECTED]> Message-ID: <[EMAIL PROTECTED]> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Form-Type: [List-Manager-Commands] Command: [auth 421fae58] Command: [subscribe <[EMAIL PROTECTED]>] Command: [end] ------------------------------------------------------------------------- It appears that they are doing some processing to relate checking mail with sending mail. I believe there is some time interval, on the order of minutes, that one must check their POP mail account before sending SMTP mail or else they reject the sending email message. I've called their customer service and have gotten absolutely nowhere with them. I can't get them to address the error message that is shown above, they only want to talk about how Outlook is configured. I'm afraid this is going to be a long drawn-out battle with them. Anyway, I've never run across anything like this before, and was wondering if anyone had, and whether there was a solution for it or not. I looked through the exim docs and didn't see any configuration that would seem to accomplish this. Thanks...