Some mail not coming through

Discussion in 'HOWTO-Related Questions' started by herbie, Oct 13, 2009.

  1. herbie

    herbie New Member

    I've been running the Postfix/Courier/Amavis Sarge setup for years, and added the Stop Spam Before Server setup as well.
    In the last few months I have been getting calls that some people are not getting some e-mails.
    There is never anything in the mail.log that says any mail even arrived at the server from that sender, or there is a line where mail from that sender to someone else in the domain went through just fine.
    I talked to one person sending, and his mail is sometimes bounced with the error "connection to server) timed out". There is no log entry that a connection was made or dropped from his domain or IP address in the log. I've grep'd for his entire class C and no record of any connection attempt at my end.

    Of course it ONLY happens to the two most obsessive-compulsive people on the entire system.

    Could it be that my server was 'too busy' at the time and didn't even write a log entry? My server is on a fiber connection so it's unlikely it lost connectivity.
  2. falko

    falko Super Moderator ISPConfig Developer

  3. herbie

    herbie New Member

    Zero blacklist, a couple timeouts.
    MX records are all ok

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