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2916 discussions

Exchange Servers having problems with SMTP 4xx temporary failures?
by Benoit Panizzon 12 Apr '07

12 Apr '07

Hi all During the last few days spent tracking strange problems with exchange servers from different companies. From my actual point of view exchange server seam to have troubles with tempfail messages. They notice a 4xx error, tryes again a few times and then occasionaly returns the email to the sender with following message: "Sie sind nicht berechtigt, Nachrichten an diesen Empfänger zu senden. Wenden Sie sich an den Systemadministrator." 550 5.7.1 <lucciola@*>... Relaying denied> This Relaying denied definitely is not from the server receiving the email. There I can only find tempfails. I also have seen other messages than relaying denied there which made even less sense. This happened a few times with graylists tempfails and also happens with a customer sending quite a lot of mails from his exchange and running into sendmails reject=452 4.3.2 Too many open connections. limit. Have other seen this behaviour of exchange servers and know how to prevent it? The strage thing is this only seams happens occasionaly. It can be that the customer sends a mail to hundreds of recipients, causes many tempfails about 'too many open connections' but the emails eventualy get through without problem after a while. I guess it could be, that exchange mixes up message status from other emails and just sends the wrong error message back to the sender. Mit freundlichen Grüssen Benoit Panizzon -- I m p r o W a r e A G - System Services ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

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Re: [swinog] does Econophone block port25
by Scott Weeks 12 Apr '07

12 Apr '07

---------From: Jeroen Massar <jeroen(a)unfix.org>------------- : To avoid problems there, make a simple policy: if found : spreading a virus/spamming and having disabled the blockage: : no Internet for a week. Or a similar measure that can of : course be lifted after paying a fine. Wouldn't that make customers go to another comany for service? scott --- jeroen(a)unfix.org wrote: From: Jeroen Massar <jeroen(a)unfix.org> To: swinog(a)swinog.ch Subject: Re: [swinog] does Econophone block port25 Date: Wed, 04 Apr 2007 08:42:20 +0100 Candid Aeby wrote: > Hi > > first this is no local decision. We never liked it. I know it is unpopular > and i would prefer a better solution. Since Monday Port 25 is blocked for > Dial-Up and ADSL connections. Is that outbound from $customer -> $internet, or is that also for inbound $internet -> $customer? Having a block on port 25/tcp, 137-139/udp and some other magic virusports is acceptable on end-user IP's. BUT as long as the user of that line has the option to easily turn this off. Eg using a webinterface where they can login using their user/pass and then enable it again, that is disable the block. If that is not possible, then when a user moans about not getting "Internet connectivity" they are quite right. Users who are not the typical techy, can always use 587 as you indicated and should, in general, keep the block on. To avoid problems there, make a simple policy: if found spreading a virus/spamming and having disabled the blockage: no Internet for a week. Or a similar measure that can of course be lifted after paying a fine. Greets, Jeroen _______________________________________________ swinog mailing list swinog(a)lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog

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Re: [swinog] Re: blocking ports?
by Scott Weeks 11 Apr '07

11 Apr '07

: You'd be amazed how many companies operate their own : mail servers, even behind dynamic addresses I'm speaking with guys in my company on an issue and part of the discussion has to do with me saying no one runs a mail server from behind a dynamic IP addresses. Other than just your experiences, does anyone have pointers to data on folks that do this? scott --- swinog-list(a)dudes.ch wrote: From: Markus Wild <swinog-list(a)dudes.ch> To: swinog(a)swinog.ch Subject: Re: [swinog] Re: blocking ports? Date: Wed, 11 Apr 2007 19:26:39 +0200 Jonathan, > Sorry but I disagree with Per. ISPs have a duty to prevent email > Spam which is a terrible curse for us all. If they decide that > blocking port 25 outbound will help then they should do it. > > If you are a user, why can't you use the ISPs relay server? If you > are a provider you ought to have your own mail server on a fixed IP > address. You'd be amazed how many companies operate their own mail servers, even behind dynamic addresses (in which case they usually use some mailbox polling mechanism to feed their server from mail from the outside), but send outgoing mail directly with SMTP. > Of course, one day we need a better protocol than SMTP (*Simple* Mail > Transfer Protocol) which was never meant as a global email solution. > But until then we have to do something to stop people abusing it. But by killing the payload, not the messenger, please... Cheers, Markus _______________________________________________ swinog mailing list swinog(a)lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog

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Samsung SCM-140U Cable Modems
by Michel Renfer 11 Apr '07

11 Apr '07

Hi All Anyone using those SCM-140 modems? Please contact me offlist! cheers, michel

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Looking for Cisco Switches...
by Matthias Hertzog 11 Apr '07

11 Apr '07

Hi folks For a temporary installation for a customer i'm looking for Cisco Switches with at least FE-Ports. Some 2900 or better are fine. If you have something to sale, please send an offer to me (off-list). Thanks & best wishes, Matthias _________________________________________ mhs @ internet AG Zürcherstrasse 204, CH - 9014 St. Gallen Phone +41 71 274 93 93, Fax +41 71 274 93 94 http://www.mhs.ch _________________________________________

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Complete facilities in Basel, Bern, and Zurich
by Mickey Coggins 05 Apr '07

05 Apr '07

Hi, I've got complete "POPs" in Bern, Basel, and Zurich that have raised floors, aircon, UPS, batteries, even DC power rectifiers. I don't need them any longer. If you are interested in taking over the lease, and/or buying the stuff for a good price, please let me know. Thanks, Mickey -- Mickey Coggins Tel: +41-22-783-6630 GSM: +41-79-476-8183

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does Econophone block port25
by Michele Capobianco 04 Apr '07

04 Apr '07

I will tell all our costumers to not use econophone/tele2 anymore. That is no behavior! And on the econophone FAQ is nothing about that. But to be honest i did not think about tele2 FAQ at the first time. Greets Michele

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does Econophone block port25
by Michele Capobianco 04 Apr '07

04 Apr '07

Hey all One of our costumers called us and said that he cant send mails anymore. After a few Hours checking with ports and stuff it appears that he cant open a port25 connection to anywhere. All Firewalls are out now, so its the Econophone ADSL allone. Does anyone know something about that ? Regards Michele

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RE: [swinog] does Econophone block port25
by Sudan, Marco 04 Apr '07

04 Apr '07

Don't really know anything about it... might help if you upgrade the firmware, but i think its a bad move to tell half of the IT world that Econophone is having an open Network without any firewall ;-) cheers marco -----Original Message----- From: swinog-bounces(a)lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] On Behalf Of Michele Capobianco Sent: Mittwoch, 4. April 2007 08:49 To: swinog(a)swinog.ch Subject: [swinog] does Econophone block port25 Hey all One of our costumers called us and said that he cant send mails anymore. After a few Hours checking with ports and stuff it appears that he cant open a port25 connection to anywhere. All Firewalls are out now, so its the Econophone ADSL allone. Does anyone know something about that ? Regards Michele ************************************************************************************* The message is intended for the named addressee only and may not be disclosed to or used by anyone else, nor may it be copied in any way. The contents of this message and its attachments are confidential and may also be subject to legal privilege. If you are not the named addressee and/or have received this message in error, please advise us by e-mailing security(a)colt.net and delete the message and any attachments without retaining any copies. Internet communications are not secure and COLT does not accept responsibility for this message, its contents nor responsibility for any viruses. No contracts can be created or varied on behalf of COLT Telecommunications, its subsidiaries or affiliates ("COLT") and any other party by email Communications unless expressly agreed in writing with such other party. Please note that incoming emails will be automatically scanned to eliminate potential viruses and unsolicited promotional emails. For more information refer to www.colt.net or contact us on +44(0)20 7390 3900.

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Mailout Server
by Michele Capobianco 03 Apr '07

03 Apr '07

Hey all Does anybody know a Mailserver Software dedicated for Mailout? The idea is : If you send Mails to x Adresses (every Mail has his own <to> adress) it works like a normal Mailout server. If you send a Mail to 1 <to> adress and to 10000 <bcc> the Server noticed that and send the 10000 in packages of (for example) 50perHour. We would like the Software is for Windows. But i just want to know if there is such a Software Linux or Windows. Thanks for your Help. Michele

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