Hey Lampa, It is a good idea. As I dug through the code, I came up with a similar theory, but nothing is editing the files... So, unless too many qmail-smtpd's running at once can cause a new process not to be able to read a control file then I don't think that is the problem. In our cluster. Each server has it's own set of control files, we don't add domains very often (maybe once in six months.) So when we do, we just copy the new files over to each server individualy, so I don't think it is an NFS problem.
Joey On Feb 5, 2008 9:35 AM, Lampa <[EMAIL PROTECTED]> wrote: > Hello, > > is possbile that rpcthosts or morercpthosts doesn't exists in this > moment (or is not readable) - eg. user is editing/additing domain > (using qmailadmin or vpopmail) ? > > It's only idea. > > 2008/2/5, Joey Novak <[EMAIL PROTECTED]>: > > Hey Guys, > > > > So, we have a toaster install. vpopmail, mysql etc... > > > > We have about 20,000 email accounts, and recently we have observed a > very > > strange issue. > > > > Occasionaly, when a customer sends a message from squirrelmail, the > get a > > 553 error. (This probably occurs from outlook as well, we just havan't > > received any reports of it yet) The odd thing is, that if they continue > to > > try to send the message, eventually it goes through. Although we do > have a > > cluster of 4 mail servers. The problem is not unique to any of the > servers. > > A server will deny the message. But, 10 minutes later the same server > will > > accept the same message. We have been able to repeatedly re-produce the > > problem using telnet, and the exact same SMTP conversation. > > > > Here is an example smtp conversation I captured yesterday using > tcpdump. > > > > 220 mail.ispemailserver.com mail1 ESMTP > > EHLO webmail.mylifeline.net > > 250-mail.ispemailserver.com mail1 > > 250-STARTTLS > > 250-PIPELINING > > 250-8BITMIME > > 250-SIZE 10000000 > > 250 AUTH LOGIN PLAIN CRAM-MD5 > > MAIL FROM:<[EMAIL PROTECTED]> > > 250 ok > > RCPT TO:<[EMAIL PROTECTED]> > > 553 5.7.1 sorry, that domain isn't in my list of allowed rcpthosts > (chkuser) > > > > And here is the same conversation today, but without the 553 error: > > > > 220 mail.ispemailserver.com mail1 ESMTP > > EHLO webmail.mylifeline.net > > 250-mail.ispemailserver.com mail1 > > 250-STARTTLS > > 250-PIPELINING > > 250-8BITMIME > > 250-SIZE 10000000 > > 250 AUTH LOGIN PLAIN CRAM-MD5 > > MAIL FROM:<[EMAIL PROTECTED]> > > 250 ok > > RCPT TO:<[EMAIL PROTECTED]> > > 250 ok > > > > There are no hints or clues in the logs that I have been able to find. > > > > Joey > > -- > > -Joey > > > > C) 803-409-9969 > > W) 757-233-0834 > > > -- > Lampa > -- -Joey C) 803-409-9969 W) 757-233-0834
