if you want to do some magichands cheating just set up an smtp relay on a server in the main office, then you arent compounding the issue. If you want it to present from the actual smtp server just have the relay authenticate to it. I usually just set up spf instead. It is not a solution, but a patchfix you will have control over, you will also be able to verify whether its the satellite office causing the issue since you can log on the relay
On Fri, Oct 31, 2014 at 10:53 AM, Bill Prince via Af <[email protected]> wrote: > It was doing this on 5.21; we upgraded to 5.26 as a test. No difference. > And, it's the same router whether it's local (main office) or remote > (satellite office). > > The symptom is that "some" email never reaches the destination only when > sent from a computer in the satellite office, and only when using outlook. > > If the email is sent from web mail from a computer in the satellite > office, it works fine. Received email is fine. > > Likewise, if the computer is moved from the satellite office to the main > office, it works fine too. > > It's not recipient specific. Sometimes it works, sometimes it doesn't. > Regardless of recipient. > > My current suspicion is that there is "something" going on with the VDSL > link. It's the weakest link in the chain, and using old phone cables that > were buried a couple decades ago. Maybe an MTU issue, but I'm guessing > that it's load related; and SMTP is more sensitive to the issue than most > other things. > > bp > > On 10/31/2014 4:18 AM, Shayne Lebrun via Af wrote: > >> Get rid of 5.26; in my experience, it has odd packet loss problems. >> >> Drop down to 5.19, or go up to 6. >> >> Also, what happens to the email that 'doesn't reach it's destination?' Are >> you having problems sending, or receiving? >> >> >> -----Original Message----- >> From: Af [mailto:[email protected]] On Behalf Of Bill Prince via Af >> Sent: Thursday, October 30, 2014 8:59 PM >> To: Motorola III >> Subject: [AFMUG] outlook becomes "intermittent" in satellite office >> >> >> This is a bizarre set of symptoms, and I really don't know what is going >> on. >> So I will articulate the facts, and maybe one of you can tell me what >> might >> be wrong. >> >> We have a business subscriber that occupies several buildings. The >> buildings are separated by enough distance that we have to interconnect by >> means other than vanilla ethernet. >> >> Our service is delivered to their main office. Our SM is installed there >> (PMP450), plus a Mikrotik router on ROS 5.26. The Mikrotik manages 4 >> VLANs; >> 1 business VLAN, which is bridged to the main subnet in the main office. >> The other 3 VLANs are guest VLANs; each on their own >> (private) subnet. >> >> All the computers, etc. work fine in the main office. >> >> The main office is connected to the "guest building" with a VDSL modem (~~ >> 800' phone line between buildings). Not much occurs in the guest >> building; >> it has a couple of WiFi APs for the guests. >> >> In the guest building, we've installed an RB260GS switch. It divides the >> various ports out to 4 different VLANs. A couple ports are the "business >> VLAN", plus 3 different "guest VLANs". The SFP port on the RB260GS is >> used >> to connect to the "satellite office" another couple hundred yards beyond >> the >> guest building. The SFP port is on the business VLAN. >> >> At the satellite office, they have 2 computers. Everything on the 2 >> computers in the satellite office seems to work just fine. Web browsing, >> streaming youtube, etc. >> >> However, when they run Outlook, "some" email doesn't go to the >> destination. >> As far as we can tell, it gets to their off-site SMTP server (Globat), but >> some of it doesn't ever reach its destination. If they use their web-based >> email, the email works every time. Also, the POP part of the email works >> just like you'd expect. >> >> Today, we moved one of the computers back to the main office, and >> surprise, >> surprise, Outlook starts working just like it's supposed to. >> >> We've run extended ping tests between the satellite office and the main >> office, and there is no break in the link. It seems solid. So where/how >> is >> the SMTP part of email breaking? >> >> What tests can I run to figure this out? >> >> >> -- >> bp >> >> >> > -- All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can't get them together again, there must be a reason. By all means, do not use a hammer. -- IBM maintenance manual, 1925
