Hi all, I have the following problem: I'm using email/web hosting services with a virtual domain (dtext.com). Email adressed @dtext.com arriving at my US web/email provider is (except for one case, see below) forwarded to a POP account at a my local Swiss access provider. Note that to send email I'm using the SMTP server of my Swiss access provider, which is configured in sendmail.cf as my SmartHost. So when I use my email client off-line and send, the message goes to my local SMTP, and it is passed to the SmartHost when I get on-line and issue a sendmail -q. So far, so good, I've been using this simple (and rather common I guess) setup for more than a year now (and specifically with Linux + local sendmail for 5 months). Recently however, the SMTP server of my local access provider started rejecting my outgoing email. The SMTP transcript (details at the end of this message) listed >>> MAIL From:<[EMAIL PROTECTED]> SIZE=107 <<< 501 <[EMAIL PROTECTED]>... Sender domain must exist This is not linked to the "From:" field in the message header, as this one was set to [EMAIL PROTECTED], and dtext.com is the (valid) name of my virtual domain. It's something at the SMTP dialog level. To solve this problem, I looked around and tried to add "dtext.com" as my "official domain name" in the sendmail.cf with Djdtext.com This worked for ordinary email, but now if I tried to send a message to [EMAIL PROTECTED], it would reject the message saying that some-mailing-list was not a known user @dtext.com. Clearly the SMTP server of my Swiss access provider was trying to send the message to my system, as I told it that dtext.com was my own domain name. But some-mailing-list is actually the address of a mailing list handled by my US provider, and whose mail is not and should not be forwarded to my Swiss POP account, but dispatched to the list members from my US provider site. What should I do? I temporarily removed the problem by putting some other domain name (prochain.ch, that I own, too) as official domain name, but this is bad, as it means I won't ever be able to send email to [EMAIL PROTECTED] (it would try to send it on my system and report there is no such user). I have RedHat 5.0 with kernel 2.0.31 and the sendmail version that comes with that distribution (how do you make it print its version number?). I give below the detailed error message I got initially. Any help appreciated, Jacques --SAA01438.906913989/phat.corcise The original message was received at Sun, 27 Sep 1998 16:38:58 +0200 from jacques@localhost ----- The following addresses had permanent fatal errors ----- [EMAIL PROTECTED] ----- Transcript of session follows ----- ... while talking to mail.worldcom.ch: >>> MAIL From:<[EMAIL PROTECTED]> SIZE=107 <<< 501 <[EMAIL PROTECTED]>... Sender domain must exist 501 [EMAIL PROTECTED] Data format error --SAA01438.906913989/phat.corcise Content-Type: message/delivery-status Reporting-MTA: dns; phat.corcise Arrival-Date: Sun, 27 Sep 1998 16:38:58 +0200 Final-Recipient: RFC822; [EMAIL PROTECTED] Action: failed Status: 5.5.2 Remote-MTA: DNS; mail.worldcom.ch Diagnostic-Code: SMTP; 501 <[EMAIL PROTECTED]>... Sender domain must exist Last-Attempt-Date: Sun, 27 Sep 1998 18:33:09 +0200 --SAA01438.906913989/phat.corcise
