Thanks, David.  There is really nothing set in the LSMB config
      other than to point to the mailer. 
    
    I am not convinced that the failure has anything to do with the
      mailing.
    The only proxy server I run is the connection between starman and
      apache, if I understand that correctly.
    
    
      
      Hi Bill,
      
      
      It might help if you can tell us how you configured your mail
        server settings.
      
      
      This is normally done in ledgersmb.conf. 
      Please obscure any usernames and passwords in your reply. 
      
      
      Regards 
      David G
      
      
      
      
      
      
      
        Sent from my
          Samsung Mobile on the Telstra Mobile Network
       
      
      
      
        -------- Original message --------
        
        Date: 1/7/18 22:28 (GMT+08:00) 
        
        Subject: [ledgersmb-users] Broken mail 
        
        
       
      I am currently running 1.5.12 and have been since it's release.
        On 25 June 2018 using the recurring transactions, invoices were
        mailed to ~20 tenants, all successfully sent and received (I am
        copied on them, so I know). Today 1 July, I successfully posted
        a number of checks (cash->receipts), after which I attempted
        to send "paid invoice emails". I received the following error
        message. 
      
      "Proxy Error
      The proxy server received an invalid response from an upstream
        server.
        The proxy server could not handle the request POST /ledgersmb/is.pl.
       Reason: Error reading from remote server"
      From the access_log:
      192.168.0.240 - - [01/Jul/2018:09:57:10 -0400] "POST
        /ledgersmb/is.pl HTTP/1.1" 502 410
        "https://www.theotts.org/ledgersmb/login.pl?action="">
        "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:61.0) Gecko/20100101
        Firefox/61.0"
      
      From the error_log:
      
      [Sun Jul 01 09:58:10.822889 2018] [proxy_http:error] [pid 1380] (70007)The
        timeout specified has expired: [client 192.168.0.240:56182]
        AH01102: error reading status line from remote server
        localhost:5762, referer:
        https://www.theotts.org/ledgersmb/login.pl?action="">
        [Sun Jul 01 09:58:10.822972 2018] [proxy:error] [pid 1380]
        [client 192.168.0.240:56182] AH00898: Error reading from remote
        server returned by /ledgersmb/is.pl, referer:
        https://www.theotts.org/ledgersmb/login.pl?action="">
      
      Current Centos OS level from uname -a:
      Linux wbointi7.theotts.org 3.10.0-862.3.3.el7.x86_64 #1 SMP Fri
        Jun 15 04:15:27 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
        
      Between 25 June and 1 July, the server hosting ledgersmb was
        updated, likely being the cause of the problem, but I have not
        found any issues I can attribute to this failure. Any help or
        suggestions are appreciated.
      
      
      
      
      
      -- 
Regards,
Bill Ott
Home: 919-363-0031
Cell: 919-434-7589
Email: Mailto:..hidden..
Website: http://www.theotts.org
Profile: http://www.linkedin.com/in/wbott