| smtp problems |
 Posted by
Peter Mitterboeck
on Wednesday, February 18, 2004 at 11:26:35 AM (EST)
Hi!
Since upgrading from lansuite 2002 to 2003, I have an interesting problem: when sending email from any workstation, it takes over 2 minutes before the transfer of data between workstation and lansuite server starts:
16:02:31 SMTP: [2] 'acer-schlepptop' [192.168.0.16] connected.
16:02:31 SMTP: [2] SMTP connection to 'acer-schlepptop' established.
16:05:22 SMTP: [2] Receiving message to 'D:\LANSUITE\io\internet\2eff5bec.d'.
16:05:22 SMTP: [2] Message received (2062 B).
16:05:24 SMTP: [2] SMTP connection to 'acer-schlepptop' properly terminated.
So the network works fine, ther are no other problems or errors, just this delay when processing a message.
Now I tried to send a message via telnet:
250 Welcome acer-schlepptop
mail from: peter@localdomain.at
250 peter@localdomain.at Sender Ok
rcpt to: p.mitterboeck@aon.at
250 p.mitterboeck@aon.at Recipient Ok
data
354 Please start mail input.
testmail
.
250 Mail queued for delivery.
The point is that the smtp-server hangs for 1-2 minutes at the "rcpt: to" - command before it accepts the recipient. Is this a bug or can I do anything to make the server act faster? This problem never occurred in lansuite2002!
By the way, this has nothing to do with antivirus software!!!
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 Posted by
Peter Mitterboeck
on Wednesday, February 18, 2004 at 12:13:36 PM (EST)
... another fact is that via webmail you don't expect timeouts! testmail vie webmail interface left the workstation and the server within seconds!!!
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Posted by
Peter Mitterboeck
on Wednesday, February 18, 2004 at 1:03:54 PM (EST)
it's me once again. Could it be possible that the time issue correlates with the anti spam lists selected?
I thought the anti spam lists are used when retrieving email from the internet, not when sending email to the internet!?
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Posted by
Efren Ouano
on Wednesday, February 18, 2004 at 2:48:41 PM (EST)
Peter;
See my notes on my problem thread that you had responded earlier.
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Posted by
Robert Smith
on Wednesday, February 18, 2004 at 4:38:46 PM (EST)
Could this have anything to do with anti-spam? Maybe. What happens when you turn off the anti-spam stuff?
I could see where it could take a while to contact your DNSBL lists and/or process it against your anti-spam settings..especially the DNSBL's as they are hosted elsewhere.
Likewise, if you have a large number of servers/addresses in your block list, it's possible it could take a while to process this.
I mentoned in the other thread that the server is a queuing server. I'm quite experienced with these types of servers, as they are commonly used in the *nix environment (Sendmail, for example is commonly used as a SMTP+Queuing server, in fact, I believe RedHat Linux uses Sendmail in the capacity as default, for example.
A Queuing server stores the message and then processes it when resources are available, on a connection schedule, etc. I have noticed in LS, this schedule is about 1-2 minutes or so and appears to be hard coded into the program (Ie, I don't see any way to change it)...
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Posted by
Efren Ouano
on Thursday, February 19, 2004 at 11:00:32 AM (EST)
It is the SPAM filter list. What is the minimum selection? Which one is the best on the list?
I deselected my previous choices and now everything runs fast.
Isn't there a way to check SPAM only on incoming email?
The case is closed for me.
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