Re: We are under a spam attack of sorts. Could you help me out.
Title: Message Hi, If dbcorp.ab.ca is the domain you are reffering to, then I guess the answer lies in your dns-configuration: ; DiG 8.3 any dbcorp.ab.ca;; res options: init recurs defnam dnsrch;; got answer:;; -HEADER- opcode: QUERY, status: NOERROR, id: 4;; flags: qr aa ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1;; QUERY SECTION:;; dbcorp.ab.ca, type = ANY, class = IN ;; ANSWER SECTION:dbcorp.ab.ca. 1H IN A 207.54.97.121-- every mail for a [EMAIL PROTECTED] will be pointed to this address, unless a MX is specified dbcorp.ab.ca. 1H IN NS empire.dbcorp.com.dbcorp.ab.ca. 1H IN NS ns2.terago.ca.dbcorp.ab.ca. 1H IN SOA empire.dbcorp.com. mis.dbcorp.com. ( 30 ; serial 15M ; refresh 10M ; retry 1D ; expiry 1H ) ; minimum dbcorp.ab.ca. 1H IN MX 10 mail. -- I see an MX record ... ;; ADDITIONAL SECTION:empire.dbcorp.com. 1H IN A 207.54.97.123 ;; Total query time: 279 msec;; FROM: flagship to SERVER: default -- 212.254.207.10;; WHEN: Fri Jul 12 18:41:09 2002;; MSG SIZE sent: 30 rcvd: 178 hope this helps, regards reto - Original Message - From: Rod Cappon To: MS-Exchange Admin Issues Sent: Friday, July 12, 2002 5:57 PM Subject: We are under a spam attack of sorts. Could you help me out. How are they doing this. Someone out their is sending out spam and for a return address they were specifying an email address and [EMAIL PROTECTED]. Then they used a open mail relay server to send out the spam. When they send a email to a bad email address the receiving mail server sends a non delivery report to our mail server. Our quick solution to that was to drop the MX record for the dbcorp.ab.ca domain. We could do this mainly because it has not been used for several years now. The only reason we had it was for legacy support. Since we dropped the MX record I figured it would not be possible for mail servers to send us NDR. But now we are receiving NDR at our web server for the dbcorp.ab.cadomain. I don't understand why a mail server would be sending NDR to that IP address. Right now we have set up a MX record under dbcorp.ab.ca that points to the web server of the company that is sending out the spam but I still see the NDR coming to us on our web server.I assumed if there is no MX record there could be no mail delivery be it a NDR or otherwise. How are they managing to make email servers point to our web site for the NDRList Charter and FAQ at:http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: SMTP gateway servers
hi gene, linux with postfix as MTA and amavis (linked to any virus scanner you like) works great as email gateway - and it doesn't cost you a cent. regards reto - Original Message - From: Gene Scruggs [EMAIL PROTECTED] To: MS-Exchange Admin Issues [EMAIL PROTECTED] Sent: Thursday, July 11, 2002 9:26 PM Subject: SMTP gateway servers Our company is working on upgrading our SMTP gateway servers and I am disillusioned with how our current software has evolved. I would like to hear how others have implemented this concept and what product they used. TIA Gene A Scruggs American College of Emergency Physicians Technical Support Manager List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: INbound IMC mail conversion processing SLOW
Messages/hr, Queued MTS-IN etc...) All seems fine until we start to receive 2800 - 3200 messages/hour and then all goes painfully slow. The measure of Inbound bytes doesn't seem to matter to much. just guessing ... could the problem be elsewhere ... e.g. do you do DNS-lookups for every mail received and then the DNS is the bottleneck? regards ... reto List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: You cannot enter an Internet address here.
permissions on the unix-box? /reto - Original Message - From: Miguel Bosseloo [EMAIL PROTECTED] To: MS-Exchange Admin Issues [EMAIL PROTECTED] Sent: Thursday, May 02, 2002 11:27 PM Subject: You cannot enter an Internet address here. I have a user that claims that he could take an attachment out of outlook right click, select, Save As, in the save in addres bar, click the arrow select an ftp location. He calim he could do it before we upgraded to Windows 2000. When he tries it now he gets the following message. You cannot enter an Internet address here. Enter a path that points to a location on your computer on the network. The fnny thing is that I configure this ftp location to a unix box I can brouse it but can not save the file there any ideas. Exchange 5.5 Service Pack 4 Windows 2000 Sevice Pack 2 Outlook 2000 Thanks, for your help. Miguel List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: Mailbox size limits
Title: RE: Mailbox size limits ... well, I don't use any quotas ... discspace is cheap and I don't like whining users ... but beware ... if you give them one finger they are going to take the whole hand :-) ... most users a reasonable and using between 5meg and say, 120meg ... but there are always a few, urmm, special cases ... until now the highscoreis 400meg - and then they start complaining that outlook is sooo slow ... /Reto - Original Message - From: Precht, David To: MS-Exchange Admin Issues Sent: Friday, April 26, 2002 7:59 PM Subject: RE: Mailbox size limits Last place with Exchange 175/200/225 Currently for client on Notes 50 Highest that I have seen 300 BUT someone has always b*tched and got theirs booted up, to get this, 1 gig ! Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -Original Message- From: Jon Farr [mailto:[EMAIL PROTECTED]] Sent: Friday, April 26, 2002 13:34 To: MS-Exchange Admin Issues Subject: Mailbox size limits I'm curious what other businesses are using for mailbox size limits. We have a user at one client who keeps insisting that 90Mb isn't enough (we've already made exceptions to get her to that point). I'd like to have some comparisons to show her that 90Mb is ridiculous. For 95% of the users, we use the defaults from Exchange (45/60/80), which still seems large to me. Then there are the few packrats who won't delete an email. Ever. thanks, Jon Farr List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at:http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: Listserve(s) for Exchange -- - vs. Linux
Hi, I'm rather new on this list, so first of all: Hello all and thanks to everyone who is contributing to this list. We use Exchange 5.5 for internal e-Mail and groupware and a Linux based mailhub for external traffic, basically for two reasons: - Virus Scanning at the border of our net (AMaViS in conjunction with a command line scanner is the best AV product I have ever seen) - Feeding Mailing Lists So if you have the necessary Linux sendmail (or qmail, postfix or whatever you like) skills then I would do it like that. You gain some security and a real powerful MTA at the border of your net. Exporting and reimporting should not be a problem. You can export it as .txt or .csv and then reformat it according to the needs of your listserver and reimport it. Please do not misunderstand me: Exchange _is_ a great product, we use it for five years and it has proven to meet our needs and even more. But I like it better to have Exchange inside the LAN and a dedicated MTA on the gateway. I hope I'm not causing a flamewar :-) best regards reto inversini - Original Message - From: david burrows [EMAIL PROTECTED] To: MS-Exchange Admin Issues [EMAIL PROTECTED] Sent: Friday, April 19, 2002 3:35 PM Subject: Listserve(s) for Exchange -- - vs. Linux I need to set up a few small listserve(s) for our non-profit. Our current email server is Exchange 5.5 (win2k Server). I also have a Linux sendmail server for test and development purposes. Is there a stable Exchange compatible product, or should I set up the listserve of my linux R/Hat box? Is it possible to import my address books/mailing lists to the Linux box from Exchange? Or is it better to run all of our email from the Exchange server? We are a small organization with only 10 users/client email accounts. tia, David Burrows Communications Director Pacific NorthWest Economic Region Seattle, WA List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: AOL postmaster errors
Title: Message Hi, As someone already statet, most probably a forged e-mail address ... if you are running a webserver on this box, I would also check for vulnerable scripts that could be abused to send out mails, eg. formail.pl ... Regards Reto Inversin - Original Message - From: Sethi, Ali To: MS-Exchange Admin Issues Sent: Friday, April 19, 2002 9:51 PM Subject: AOL postmaster errors Has anyone seen this before? It looks like someone is using a mailbox from one of our users and sending all kinds of emails out. We have NAV for Exchange blocking all attachements that are suspect to be virus attachments. The users is complaining that she is getting a ton of these post master errors. Any suggestions on how to eliminate this? We are not setup as relaying. Exhange 5.5 sp4 Windows 2k sp2 sr1 Thanks, The original message was received at Fri, 19 Apr 2002 15:04:36 -0400 (EDT) from logs-wq.proxy.aol.com [205.188.200.132] *** ATTENTION *** Your e-mail is being returned to you because there was a problem with its delivery. The address which was undeliverable is listed in the section labeled: "- The following addresses had permanent fatal errors -". The reason your mail is being returned to you is listed in the section labeled: "- Transcript of Session Follows -". The line beginning with "" describes the specific reason your e-mail could not be delivered. The next line contains a second error message which is a general translation for other e-mail servers. Please direct further questions regarding this message to your e-mail administrator. --AOL Postmaster - The following addresses had permanent fatal errors - [EMAIL PROTECTED] - Transcript of session follows - 550 [EMAIL PROTECTED]... Host unknown (Name server: sabertooth.victim.net: host not found)List Charter and FAQ at:http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: OWA Requirements?
Hi, If you have a bit of cash available but not that much as necessary for a Checkpoint consider the sonicwall. I use them for an NGO and I just love it. Easy to configure and maintain and yet rather powerful. www.sonicwall.com As Patrick Johanssons pointed out: If you have no cash at all (but sufficient knowledge) then a Linux or *BSD solution would do the trick. There are plenty of them. By the way: If you connect any Server to the Internet without appropriate protection, my bet is that you have already been visited by some people, you would not like to meet in your network. Look out for a Firewall - the sooner the better. On a small network, protected by a sonicwall, I have about 5 Scans a day, 2 to 10 Attacks and about 20 times a day someone trying to access a service I don't want to be accessed by someone from the outside. Best regards Reto Inversini -Original Message- From: ext aci [mailto:[EMAIL PROTECTED]] Sent: 07 January, 2002 21:32 To: MS-Exchange Admin Issues Subject: Re: OWA Requirements? None Taken! It is something that is in process. Unfortunately, we are at the beginning of the process, and need a tremendous amount of help - and as usual with small non-profits - funds are extremely limited. Fortunately, we are on a 10.x.x.x range nated through the gateway router. Do you have any good suggestions for hardware or software firewall solutions? TIA, aci No offense, I have no firewall solution currently in place. Are you nuts? - Original Message - From: aci [EMAIL PROTECTED] To: MS-Exchange Admin Issues [EMAIL PROTECTED] Sent: Monday, January 07, 2002 11:44 Subject: RE: OWA Requirements? List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
Re: Exchange admin
Hi, First time on this list, pleased to meet you all :-) ... VNC is really a great tool, I use it on my LAN. But always remember: It does not provide any encryption by itself ... so using it on a non-secured line is pretty dangerous, unless you make a ssh tunnel or something similar. Regards reto inversini - Original Message - From: Scott Erwin [EMAIL PROTECTED] To: MS-Exchange Admin Issues [EMAIL PROTECTED] Sent: Friday, October 26, 2001 3:05 PM Subject: RE: Exchange admin Download VNC. It's small. Fits on a floppy. http://www.uk.research.att.com/vnc Install vnc on your SBS machine and run WinVNC(app mode). Give it a password. run the vnc viewer on your machine and type in the name of your server. Enter the password. Now you can administrate it as if you were sitting at the machine. -Original Message- From: Jennifer Gaylor [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 25, 2001 2:23 PM To: MS-Exchange Admin Issues Subject: Exchange admin Thanks everybody for the input, everybody basically said the same thing which of course does not work, I would have figured that out on my own if it was so easy! Unfortunately, perhaps becasue it is SBS4.5, the installation program requires that Small Business Server be installed. I was kind of hoping someone would know of some switches or something. Please try again!! List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
