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Messages held in Mailfoundry due to Bare Linefeeds
I really hope someone here can shed some light on this for me. We use Lotus Domino as our mail server, and our spam filter is a Mailfoundry 2100 which is in the DMZ. Yesterday we noticed that emails going out to Yahoo and AOL were being held in the Outgoing Queue on the Mailfoundry due to "451 Timeout waiting for end of DATA. Be sure your client is not sending bare linefeeds." In troubleshooting this, when we bypassed the Mailfoundry, we found that email going to Yahoo and AOL work fine. They are not rejected by Yahoo or AOL. We also discovered that if while sending messages through the Mailfoundry, if we have less than 124 characters in the body of the message, it will go through with no problem. The second that we add the 125th character, the message gets held up in the Outgoing Queue on the Mailfoundry. We have called Mailfoundry several times to try and resolve this, but they say the unit is not the issue. We have replaced the network cable going to the unit as instructed by Mailfoundry, but that did not help either. If you have any hints on what needs to be done or would like more info, please let me kow.
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Answers
Hi there zefon,,,
First of all,, I know nothing about "Mailfoundry 2100" but let me analyze the case
1- You mentioned that >>>Yesterday we noticed that emails going out to Yahoo and AOL were being held in the Outgoing Queue on the Mailfoundry<<< which simply means that the emails have already been transferred from the Lotus Notes Domino server so it is not an LND problem ......you also mentioned >>>when we bypassed the Mailfoundry, we found that email going to Yahoo and AOL work fine<<<.So, it is highly likely that the problem is in either "Mailfoundry 2100" device or the connection of the "Mailfoundry 2100" to the Internet . So, for this case I highly recommend Doing the following :
* How is the "Mailfoundry 2100" connected to the internet (for sending out going emails ) or to the ISP( Internet services provider)???
For sure it must be connected through cables ( which already have been replaced )and here should be some other Networking Devices e.g. switches , routers etc. ... Do you have any of these devices ???? Where these devices checked ??? In this similar case one of the comments posted was that it is a Network issue so please check .
http://www.mail-archive.co
* Did you make sure that there is no problem with the ISP( Internet Services Provider) or between "Mailfoundry 2100" and ISP mail servers ??
Please check it out
2- You mentioned >>>Mailfoundry, if we have less than 124 characters in the body of the message, it will go through with no problem. The second that we add the 125th character, the message gets held up in the Outgoing Queue on the Mailfoundry<<<
I am not quit sure but for me it is highly likely there is an issue with "Mailfoundry 2100" device because a security scanning must be performed on the message header and body so check if there is an restrictions lists ,rules or any thing else .
And Finally, you should make the vendor of "Mailfoundry 2100" send a support Engineer to check this problem on-Site .
Best Wishes
Nothing has changed since yesterday that I am aware of. I firmly believe that it is the Mailfoundry box as well, but whe I call them, they come into the machine and tell me everything is fine. We have replaced the cable that goes to the unit from our Dell Switch stack and we got the same response. I am with you 100% that if we take the unit out of the loop and everything works, it is the unit, but Mailfoundry isnt hearing me. I will keep you posted as we progress.
zefon,,,,
Just one last suggestion I wonder if it is possible for you to ask them to get another
configured Mailfoundry device ( for sure they have some for testing ) ,replace it with the defective one and make some tests by sending some emails to Yahoo.com and AOL and will both you and them get a clear image about whats going on .
in fact you have to schedule such an activity either in after the working hours or in the week ends and I recommend that you send some emails before removing the defective one and after you install the testing device .
Best Wishes
Hi there zefon,,,
Firstly dont worry Yahoo will come back to you .
Secondly, I recommend that you contact the support of the company in the following link and explain every thing to them including what the local support told you .
http://www.mailfoundry.com
Best Wishes
zefon,,,
What you can do in this case is to contact Yahoo support again an explain the case for them . Moreover, Do you use something called PUTTY or CLI ( Command Line Interface) ??? in fact, it is a very good tool which can be used to check the health of the device and yahoo if you can get it from the (Mailfoundry)this will be better . because it will help you ( TELNET mail.yahoo.com 25) from inside the (Mailfoundry) to the mail server of yahoo .
But still It doubt that the problem is in the "Mailfoundry" it self because you mentioned that when you bypass it you were able to send some messages to Yahoo.
By the way did you contact their support on
http://www.mailfoundry.com
Best Wishes
This issue is still not resolved. I have been in touch with Yahoo and they are TRYING to help me. I just wish that I could talk to someone live because the way it is now seems to go on forever and you never get a response from the same individuals. I was wondering too though, how would I do a telnet session from within the mailfoundry?
zefon,,,
I told you to get a tool called " Putty" and then from your PC you can do it using the IP address of the mailfoundry and the user ID and Password of the mailfoundry to access it then type help to get the help menu so you can do it check this out
http://www.chiark.greenend
http://www.chiark.greenend
Best Wishes
I tried this and it is not working. When I try to login to the Mailfoundry using SSH, I keep getting Access Denied when I put the password in. If I try to connect using Telnet, after I put in the IP address of the Mailfoundry and hit Enter, the window turns black and then dissappears. Why doesnt anything work for me?
MailFoundry boxes are a proprietary system (we use one), and they will not allow you to telnet or ssh into it as the end customer. That access is for their support personnel only.
Have you checked to see if any updates are pending for the device - System Settings Tab, System Updates link on left? Newer boxes auto-update, but I'm not sure if older devices picked up that ability.
Also, have you rebooted the box at all to see if it resolves the issue? I haven't had to reboot but once or twice in a year of my current box, but I did run into a situation where there were delivery delays to my users, which was resolved with a reboot.
I would encourage you to push on MailFoundry support as well - as you indicated, taking their box out of the mix allows mail to go to AOL and Yahoo without issue, so this is definitely something that their box is doing. I would try to get Charles P. in support; he's pretty good.
zefon,,,
Two weeks ago Iwas expecting an email on my Yahoo account and I didnt receive any thing . However, I sent a reminder email to the sender and after a couple of days he just sent me an email entitled as " For the Second time" and in Fact it was the email I was expecting sent to me for the second time which I didnt recieve when It was sent in the first time. So, I Highly recommend you to keep contacting Yahoo support because it seems that they were having a problem .
Best Wishes
The term Maximum Transmission Unit (MTU) refers to the size (in bytes) of the largest packet that a given layer of a communications protocol can pass onwards. MTU parameters usually appear in association with a communications interface (NIC, serial port, etc.). The default MTU size is 1500, however for some networking technologies reducing the MTU size and allowing fragmentation can help eliminate some connectivity problems occurring at the protocol level. For example: Throughput for PPPoE can often be improved by reducing MTU to 1452 and enabling fragmentation. More about this can be found here: https://www.fuzeqna.com/so
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by: SysExpertPosted on 2009-07-22 at 10:42:30ID: 24917621
The fact that it works fine without the Mailfoundry, means it is their problem !!
Get the latest updates and escalate !!
I hope this helps !