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RE: Re-5: [Assp-user] Problem with Attachments
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From: Rainer <ass...@ra...> - 2003-05-24 06:15:56
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John,
actually Dino's challenge is his own mail server:
It is a cheap and easy to implement alternative for small companies that includes email-, fax- and other servers in one
easy to setup/manage unit.
Unfortunately it has (as all the software of Tobit) some bugs and limitations...
The clients don't use SMTP to transfer mails to the server. So no way to put ASSP between client and server.
Dino has now
client --(proprietary protocol)--> server --(SMTP over LAN)--> ASSP --SMTP over slow uplink) --> ISPs mailserver.
And Dino is right, after accepting a mail for 'relaying' ASSP retrieves it as fast as possible into some buffer and
sends it as fast as possible to the server. if these two speeds differ significantly the client will time out waiting
for the 220 OK - message.
The idea /could/ be to restrict the buffer size of ASSP to 10 k or so to avoid buffering whole 10 megabyte mails but at
maximum 10k-parts of it.
To be honestly I don't have an idea if and/or how that is possible in Perl.
HTH, Rainer
> -----Original Message-----
> From: ass...@li...
> [mailto:ass...@li...]On Behalf Of John Hanna
> Sent: Thursday, May 22, 2003 9:48 PM
> To: ass...@li...
> Subject: Re: Re-5: [Assp-user] Problem with Attachments
>
>
> I'm still guessing here, but it seems like Dino's problem is because he has
> a slow pipe to his smtp host. There's some timing issue that I'm not yet
> aware of. It doesn't make sense to me yet why this is a problem, but it is a
> scenerio that I haven't tested it for -- I'm generally assuming that there
> is a fast connection from assp to the receiving smtp server.
>
> I'll add the debug timestamp to 0.2.0
>
> John
>
> ----- Original Message -----
> From: "Rainer" <ass...@ra...>
> To: <ass...@li...>
> Sent: Monday, May 19, 2003 8:47 AM
> Subject: RE: Re-5: [Assp-user] Problem with Attachments
>
>
> >
> > Hey Dino,
> >
> > Wuppertal is a nice city ... where you /always/ need an umbrella because
> the trains are raining from heaven... :-P
> > I'm not from Ratingen (what ever that is) but from Switzerland (wie zur
> Hoelle kommst Du auf Ratingen?). So not the next
> > step to visit you :-D.
> >
> > Honestly, I'm not John, but I read a few lines of the prog and what it
> does is:
> > It caches up to 10.000 characters of your mail (that's about 10KB --> see
> line 577 of assp.pl) and decides from that if
> > the mail is spam or not.
> > If a mail is spam the connection is reset by ASSP, if not the cache
> (again: max. 10KB) is sent to the mail server and
> > after that the streams (in and out) are 'switched together' i.e. ASSP
> doesn't look at the data anymore.
> >
> >
> > At least I'll need your complete logfile.
> > If you're afraid of giving too much personal details out you can send a
> mail to yourself with gdiplus.dll (or similar
> > windows file) as attachment.
> > Please modify your assp.pl before:
> >
> > somewhere around line 83 you find:
> > eval(q[sub d {print DEBUG "$time <$_[0]>";}]) if $DEBUG;
> >
> > replace that with:
> > eval(q[sub d {
> > $time=gmtime(); $time=~s/... (...) (..) (........) ..(..)/$2 $1 $4 $3/;
> > print DEBUG "$time <$_[0]>";
> > }
> > ]) if $DEBUG;
> >
> >
> >
> > Waiting for your input,
> >
> > Rainer
> >
> >
> > P.S. John - that would be good to /always/ have in the DEBUG, so could you
> add that please to the code?
> > It just adds date and time to every log entry to help debugging
> performance issues.
> >
> >
> >
> > > -----Original Message-----
> > > From: ass...@li...
> > > [mailto:ass...@li...]On Behalf Of
> > > din...@ar...
> > > Sent: Monday, May 19, 2003 3:39 PM
> > > To: ass...@li...
> > > Subject: Re-5: [Assp-user] Problem with Attachments
> > >
> > >
> > > Hi,
> > >
> > > > AFAIK ASSP doesn't cache attachments.
> > >
> > > no, it (or something else) caches the whole mail.
> > >
> > > > Serious troubleshooting requires a logfile from you, so how about
> setting
> > > > DEBUG to '1' and providing that?
> > >
> > > ok, I've tried it. The whole e-mail including the attachment is in the
> log-file.
> > > Maybe PERL caches the data? And maybe there's a parameter in perl to set
> a buffer
> > > or something for this.
> > >
> > > Any I've found a parameter at my Mailserver: "WatchdogDelay".
> > > The manual says: "Specifies the maximum time to wait for incoming data
> blocks"
> > > It was set to 60 seconds. When I set it so 10 minutes (600 sec.), i can
> send
> > > attachments about 5 MB.
> > >
> > > But this could not be the solution, because it is not normal to set the
> timeout
> > > to 10 minutes (or 30 minutes if I want to send files over 10 MB).
> > >
> > >
> > > Additionally, I've found the following two comments in ASSP.PL
> > >
> > > # ->{outgoing} is a buffer for outgoing socket traffic (see $writable &
> &sendque)
> > > ...
> > > ...
> > > # it's possible that the connection can be deleted while there's still
> something in the buffer
> > >
> > > That's what happend here. The connection is deleted while there's
> something in the buffer.
> > > I think I have to decrease the buffer. But I don't know where to change
> it in the code :(
> > >
> > >
> > > If it helps, here are the last few lines of the log file:
> > >
> >
> > --------------------------------------------------------------------------
> --------
> > >
> > > <25>sq: IO::Socket::INET=GLOB(0x1c5be98) l=74
> > > doing <bFB0UzAyh2VWePI3DADYNAkAUMcCAADoBQAkuoPAKPwLAEgJDAAA8AAA
> > > >
> > > <25>sq: IO::Socket::INET=GLOB(0x1c5be98) l=58
> > > doing <
> > > >
> > > <25>sq: IO::Socket::INET=GLOB(0x1c5be98) l=2
> > > doing <------_=_NextPart_000_00050305.3EC8F3BE--
> > > >
> > > <25>sq: IO::Socket::INET=GLOB(0x1c5be98) l=43
> > > doing <
> > > >
> > > <25>sq: IO::Socket::INET=GLOB(0x1c5be98) l=2
> > > doing <.
> > > >
> > > <25>sq: IO::Socket::INET=GLOB(0x1c5be98) l=3
> > > <3><6>IO::Socket::INET=GLOB(0x1c5be98) HASH(0x1c5bec8) l=986248
> > > wrote: (102400)<toolong>
> > > <6><6><8>IO::Socket::INET=GLOB(0x1c5be98) HASH(0x1c5bec8) l=883848
> > > wrote: (102400)<toolong>
> > > <6><6><8>IO::Socket::INET=GLOB(0x1c5be98) HASH(0x1c5bec8) l=781448
> > > wrote: (102400)<toolong>
> > > <6><5><12><13>closing IO::Socket::INET=GLOB(0x1c5be98)
> > > <13>closing IO::Socket::INET=GLOB(0x1c5bdf0)
> > > <6><6><8><6><8><6><8><6><8><34>May-19-03 15:10:59 Sig INT
> > >
> >
> > --------------------------------------------------------------------------
> --------
> > >
> > > > At least I am not able to /guess/ what happens on your site....
> > >
> > > Kannst es Dir gerne mal angucken. Ratingen ist nicht soooo weit weg von
> Wuppertal.
> > >
> > > ;-)
> > >
> > > > Rainer
> > >
> > > Dino
> > >
> > >
> > >
> > > -------------------------------------------------------
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> > > _______________________________________________
> > > Assp-user mailing list
> > > Ass...@li...
> > > https://lists.sourceforge.net/lists/listinfo/assp-user
> > >
> >
> >
> >
> > -------------------------------------------------------
> > This SF.net email is sponsored by: If flattening out C++ or Java
> > code to make your application fit in a relational database is painful,
> > don't do it! Check out ObjectStore. Now part of Progress Software.
> > http://www.objectstore.net/sourceforge
> > _______________________________________________
> > Assp-user mailing list
> > Ass...@li...
> > https://lists.sourceforge.net/lists/listinfo/assp-user
> >
>
>
>
> -------------------------------------------------------
> This SF.net email is sponsored by: ObjectStore.
> If flattening out C++ or Java code to make your application fit in a
> relational database is painful, don't do it! Check out ObjectStore.
> Now part of Progress Software. http://www.objectstore.net/sourceforge
> _______________________________________________
> Assp-user mailing list
> Ass...@li...
> https://lists.sourceforge.net/lists/listinfo/assp-user
>
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