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many many repeated mails on smtp proxy

nisa
I have an astaro with transparent smtp proxy.  Every incoming email passes throught a router before reaching the ASG server V6. Every port of Astaro's IP on the ruter is closed except port 25.

The Astaro serves only incoming emails. When an email passes through the Astaro it is sending to a real smtp qmail server on a linux.

The problem is: some mail servers send repeating emails (sometimes an email is received several times, 7 times for an example). What could be wrong? I think that the sending mail server don't receive a confirmative message about delivering the emails.


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  • 0
    Nisa which version are you using (please always post) ?

    Extract from KnownIssuesList V6:
    ===========================

    ID4010 6.300 Duplicate emails from SMTP Proxy when using HTTP parent proxy
    --------------------------------------------------------------------------
    Description: If a parent proxy is configured in the HTTP Proxy, the SMTP
                 Proxy will use that parent proxy as well for spam
                 categorization. An automatic packetfilter rule allowing this
                 traffic is missing. This may lead to duplicate emails in some
                 cases.
    Workaround:  Create a temporary rule allowing traffic to from your
                 external interface.
    Fix:         Fixed in 6.301


    ID3966 6.203 Duplicate emails sent from SMTP Proxy
    --------------------------------------------------
    Description: Also there has been some improvements to avoid duplicate
                 emails being sent from SMTP Proxy, an issue in the server
                 backend may have caused some emails to be duplicated again.
                 In order to avoid this kind of problems another software
                 change is necessary.
    Workaround:  ---
    Fix:         Fixed in 6.300
  • 0 in reply to KKnecht
    I use the last version V6.303.

    about the error in the log:
    1HCQgp-0001lH-7W H=a2.5a.5646.static.theplanet.com (pluto.velsatech.com) [70.86.90.162] Warning: spam_score:0.0
    1HCQgp-0001lH-7W office@ssi-bg.org H=a2.5a.5646.static.theplanet.com (pluto.velsatech.com) [70.86.90.162] P=esmtps X=TLSv1:AES256-SHA:256 S=137332 id=001a01c7452d$0b6e6ea0$0b00a8c0@DIDI
    1HCQgp-0001lH-7W SSL_write error 5[/COLOR]
    1HCQgp-0001lH-7W => corr@ourorganizacion.bg R=static_route T=static_smtp H=192.168.199.223 [192.168.199.223]
    1HCQgp-0001lH-7W -> pressclub@ourorganizacion.bg R=static_route T=static_smtp H=192.168.199.223 [192.168.199.223]
    1HCQgp-0001lH-7W Completed


    i think this is the problem SSL_write error 5
  • 0 in reply to nisa
    [:S]

    im new to astaro

    can someone please explain - "Create a temporary rule allowing traffic to from your external interface"

    thanks
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