Questions tagged [queue]

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10 views

Postfix relay queue filled with bounces from non-existing users

I'm in a specific situation where my Postfix relays mail between the internet and a backend MS Exchange cluster. The MS Exchange cluster always responds with 250 OK, regardless of what the recipient ...
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12 views

POSTFIX bounce email ro Reply-Ton and/ord Return-Path

for an email sending service, I need to configure the email bounces of POSTFIX on Debian so that they go to the Reply-To and/or the Return-Path since the one sending is a generic user "no-reply @ ...
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16 views

How to force queue delay to slow down script kiddie DOS?

We have a pretty busy web service with two HAProxy balancers in front of it. Sometimes we get script kiddie level distributed DOS (DDoS) attacks where low number of attack servers (around 100 or less) ...
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1answer
300 views

Asterisk: Using Queue() in the h extension

I'm trying to get users to be able to record a message, hangup and have the call continue and dial Queues and playback the recording. I've gotten most of the way there, but right now when I call ...
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28 views

How configurable is the Linux Network Emulator in regards to queue disciplines?

Based on this wiki article https://wiki.archlinux.org/index.php/Advanced_traffic_control It appears that I can configure the Linux traffic controller, which seems to be a subset of the Linux Network ...
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19 views

Gigaset C530A GO not busy second incoming voip call

I am struggling with this issue, asked support and searched online and tried at no avail so far. I have configured a Gigaset C530A GO dect system with a single phone connected. Set up a VOIP ...
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326 views

suricata ips mode configuration

I installed Suricata and Shorewall on device with 3 NIC and a wifi card, I wanted to configure Suricata as IPS. I followed several instructions both from the manual and from several blogs. I have ...
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46 views

Asterisk, display queue name or called number on the phone

Our Asterisk server will soon receive SIP calls on multiple numbers, so we need to know which number has been dialed to correctly answer on the phone : "Hello, this is Company-A" or "Hello, this is ...
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3answers
910 views

How to make laravel queue work in aws beanstalk?

I made an AWS Beanstalk and RDS instances. I'm testing out a project which syncs FTP and S3 files. How do I make the typical php artisan queue:work or php artisan queue:listen work in AWS Beanstalk? ...
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18 views

Exim: rewrite MAIL FROM for message that is already in queue

I have many outgoing messages in my Exim mail queue, and all of them are from postmaster@my-domain (these messages are technical ones and are sent to several recipients each). The problem is, ...
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21 views

jmeter tool giving me very difference response time than nginx $request_time

I am running a performance tests in jmeter 100T rampup 20s and loop 20. The problem is that jmeter is telling me an average response time of 2770ms however nginx $request_time the average is 1982ms ...
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204 views

Raabitmq: Ranch listener rabbit_web_dispatch_sup_15672 had connection process started with cowboy_protocol

Getting these in the logs in rabbitmq node: node1. Ranch listener rabbit_web_dispatch_sup_15672 had connection process started with cowboy_protocol:start_link/4 at <0.31197.2720> exit with ...
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1answer
64 views

How can I scale a mysql database with high I/O used for queue jobs with 300 workers?

I'm currently using angular on the frontend for a dashboard that displays the progress of queue workers. On the backend, I use 50 AWS EC2 instances that each have around 6 workers and those are ...
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233 views

“keep printed documents” re-enabling itself

We have Windows Server 2016 as a print server with roughly 40 printers of various makes (Ricoh, HP, Konica), most of which are deployed via GPO. A few months ago the 'jobs in queue' started filling ...
4
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1answer
3k views

AWS SQS behavior with multiple Lambda Triggers set

I've got an SQS queue set up with multiple Lambdas configured as triggers. While this is allowed by AWS's API it's not clear what the intended behavior is. For example, is one message pulled off the ...
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1answer
295 views

NGINX + PHP-FPM issues with burst requests

I have NGINX setup with PHP7.2-FPM and am having issues with burst requests. The average amount of active processes (fpm children) is 15. I have these settings (48 core server): listen.backlog = ...
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1answer
101 views

How to determine the bottleneck of a given network

Consider an Access Point with a packet queue that can hold up to 50 packets and a network whose bottleneck is a link with a datarate of 50 Mbit/s. There are quite a few nodes connecting wirelessly ...
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3answers
586 views

MSMQ Queue Not Processing

I have an rather unpleasant error with MSMQ, one that following the information available on-line isn't fixing. It's resulting in emails (.EML files) going into C:\inetpub\mailroot\Queue and just ...
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1answer
60 views

Share printer job queue among multiple printers

Is it possible to have multiple printers and only one printer job queue? Any good software or hardware solution? Idea is like so: someone sends a print job to printer (possibly shared via Windows ...
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1answer
418 views

To implement persistent queue, should I go for RDS or DynamoDB on aws?

This is my use case: I have a decoupled application system. One application is accepting requests, validating, and queuing in SQS. Other application is mounted on a cluster of EC2 workers that will ...
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1answer
240 views

Postfix - Bounced e-mail in mailq for non-exist email account

My postfix mail queue has quite a few bounced back e-mails; however, the recipient of the bounced back e-mail does not exist, e.g. @server_hostname.example.local, so it will never be delivered and ...
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2answers
5k views

How to open up a port firewall on Ubunto internally and how to verify it

Background I got an aws machine that's running both a laravel app, and now I've tried to install beanstalk console. This is what the nginx config file of the laravel app look like: include forge-...
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1answer
613 views

Hundreds of fake e-mails in my mail queue every day

I run postfix/dovecot/spamassasin/clamav/amavis mail server. Recently (maybe 1 month) I find about 500 undelivered e-mails in my mailq. I delete them, but I guess it is not a helathy permanent ...
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1answer
57 views

If sendmail fails to resolve smarthost, add to queue rather than fail?

Occasionally, in the middle of the night, DNS fails to resolve our smarthost address. And sendmail decides to send the mail as a "rejected" message. Because "root" is aliased to an off-box address, ...
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1answer
373 views

SGE set maximum number of nodes per user

I would like to limit the number of nodes a user can submit jobs to on a given queue. Is it possible? For example, I have 5 nodes with 10 cores each, and I do not want a given user to be allowed to ...
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0answers
490 views

The Message couldn't be delivered 250.2.6.0

Hello I have a Exchange 2010 server and I am having issues with 1 Domain trying to send us emails. I have the Anti Spam rule on and have whitelisted their email address and domain and even their IP of ...
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1answer
457 views

LINUX: multiq leaf not replaceable with tc

# uname -r 4.7.5-200.fc24.x86_64+debug # tc -s -d qdisc show dev ens3 qdisc mq 8001: root Sent 44589 bytes 340 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 qdisc fq_codel ...
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0answers
177 views

Postfix fails to send requeued (back to the active queue) deferred emails

So, I've been digging into the pits of Postfix lately in order to administrate my mail server. For various reasons, some of which I haven't yet explained, I ended up with lots of deferred emails, and ...
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0answers
72 views

Torque pbs queue system runs queue in reverse

I have a small compute cluster set up on Redhat 7.1. It runs the PBS torque queue system with version 5.1.1. When I queue several jobs it starts to run the jobs in "backwards" priority. It starts ...
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2answers
132 views

Will Ubuntu automatically queue hundreds of processes?

I'm creating a service that will be calling potentially hundreds or even 1000s of ffmpeg commands at once. Will Ubuntu 16.04 automatically queue these jobs? Is there some sort of app that does a ...
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1answer
537 views

Set large buffer/queue on a network interface to emulate bufferbloat

I want to emulate large buffer delay on a specific interface. I have a simple dumbbell topology like: PC1 eth0 <-----------------------> eth0 PC2 It would be good if I ping PC1 from PC2, ...
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0answers
26 views

Rabbitmq listener across machine not detected

I have multiple rabbitmq listeners running across linux boxes. However when I post a message A (which takes some time to process , around 5 mins), new messages after A wait in the queue till A is ...
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0answers
93 views

Using an after queue policy daemon with postfix

I have this scenario: Postfix is configured with cluebringer (Policyd v2.1) and emails that are exceeding the quota are deffered. What I need to do is somehow use cluebringer in after-queue so it ...
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1answer
55 views

What's a good way to schedule scripts that depend on each other? [duplicate]

So, I have a few scripts that need to be executed in order, and they need to wait for the previous script to finish since they need the data it gathers. I thought about putting it all in a single ...
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1answer
379 views

Change FreePBX Queue settings programatically?

Is there is anyway to change the settings(such as 'timeout') of a queue added by FreePBX?. I found No such options in Asterisk Manager (AMI) and CLI.
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2answers
2k views

Auto-restart commandline process in screen every day

I have a queue script that finds new jobs from the db every second and handles them. Sometimes it doesn't do anything for 10 hours, and sometimes it receives 1000 new jobs in 3 min. The queue works ...
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1answer
8k views

How to flush postfix queue one mail at a time?

Sometimes, mails stay stuck in my postfix queue, the distant server saying "Too many connections, slow down". I already configured my postfix for specific domains to send only one mail per second, but ...
2
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1answer
546 views

Is it possible to maintain the queue while restarting HAProxy

I am using HAProxy to load balance app servers. Each app server has a max connections limit, once that limit is exceeded the queue is exceeded. When that happens, I will be adding another app server ...
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1answer
757 views

remove emails in queue (only from specific sender)

There's almost 50k mails in my queue when i type "exim -bpc". I need to clean the mess ASAP before i get blacklisted by gmail, as these mails are being forwarded to my personnal gmail account. How ...
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2answers
934 views

How to print and save the result to a file at the same time?

I'm trying to print on Windows Server 2012. It works fine, but I'd want to generate an output file (some kind of .PRN) in order to save the last print job so it can be printed again later. Enabling a ...
3
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1answer
672 views

multithreading a single threaded application worker [closed]

I have a server which I want to dedicate for converting doc files to pdf via LibreOffice. The server has 6 cores and LibreOffice is single threaded. This means that generating a single pdf uses 16.666%...
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1answer
512 views

ActiveMQ - delete VirtualTopic when Consumers = zero

I'm trying to implement a new application using JMS under activeMQ 5.8.0. There are several applications configured as Producers (ie to dump messages in an MQ), two topics, and then the Consumers are ...
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0answers
1k views

Azure ASP.NET website http requests queued

We have a website deployed on Azure that has dreadful performance. When load increases, response times increase to whole minutes! CPU load is not even high, somewhere in the 40% region (we run one ...
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1answer
3k views

Why is audispd dropping events? What is in the queue?

My audispd keeps logging lots of queue full errors. Jun 9 08:46:29 web audispd: queue is full - dropping event I'd like to understand better why the queue is filling up and whether there is a ...
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1answer
110 views

Queue remote commands for execution as soon as workstation comes online

I am managing one workstation and think of a maximum of 5 workstations running Ubuntu-based Linux Mint. My own, controlling Computer is also running Mint. What is a good way to queue commands and have ...
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1answer
1k views

MSMQ messages disappear when they get to remote server

I have to create a MSMQ messaging mechanism between two servers in the same domain, SenderServer (MS Server 2012) and ReceiverServer (MS Server 2008 R2). I created a private, transactional queue in ...
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2answers
10k views

Postfix: change sender in queued messages

Following a complete re-installation we got a problem with the configuration: the sender address was wrong and some recipients (mail servers) rejected them. So there is a bunch of mails stuck in the ...
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0answers
479 views

Can't clear que for printer on the network

I'm not sure if this is the right place to post this, so forgive me if I am out of line. I'm having some printer problems with our server. When I look at the printer connected to our network, I see ...
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1answer
2k views

Beanstalkd and multiple workers on a tube

If I have two workers listening on a single tube and a job comes through, will both workers attempt to handle the same job, or will it get claimed only by one?
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2answers
2k views

High Low priority queues SGE

I would like to have two queues in a CPU/GPU cluster, one with high priority and one with low priority. Thus, jobs that are submitted in the high priority queue will be bumped to the top of the list ...