Have you ever been in need to execute some commands scheduled via a crontab, every let’s say 5 seconds?, naturally this is not possible with crontab, however adding a small shell script to loop and execute a command or commands every 5 seconds and setting it up to execute once in a minute through crontab makes this possible. Here is an example shell script that does execute commands every 5 seconds:
for i in $(echo 1 2 3 4 5 6 7 8 9 10 11); do
This script will issue a sleep every 5 seconds and execute the two commands defined as $command1_to_exec and $command2_to_exec
Where of course /path/to/exec_every_5_secs_cmds.sh needs to be modified to a proper script name and path location.
Another way to do the on a number of seconds program / command schedule without using cron at all is setting up an endless loop to run/refresh via /etc/inittab with a number of predefined commands inside. An example endless loop script to run via inittab would look something like:
while [ 1 ]; do
To run the above sample never ending script using inittab, one needs to add to the end of inittab, some line like:
A quick way to add the line from consone would be with echo:
The anime Living Story of Saint Peter and Saint Fevronia is a modern story remake of an ancient Church living of two bright Russian saints. The official movie genre is orthodox christian kids animation movie. The 14 minutes cartoon re-tolds the living story of St. Peter and st, Fevronia in a playful and entertaining way like for kids or youngsters. Nomatter the movie primary target audience is children, the cartoon is great to see for adults people as well :). The movie genre is orthodox christian kids animation movie. The plot is based on a true (historic record) story of two saints venerated each year across Orthodox Churches around the world.
The original story I watched was a Bulgarian translation from Russian. But since I found it to be so valuable, I look for a translated video and got one in youtube.Take 14 minutes break and watch it, I'm sure you will like it so much, that probably give it a second time glimpse alone or with your wife, children or girlfriend.
Unfortunately, the english title is mis-translated as it says "Tale" and not "Story" and there is difference in meaning between this two words. It is not tale as tale is made up story and this is not a made story but a story based on the two saints who lived in the end of 12 and beginning of the thirteen century. Here is in short the real Church living: The two saints were living in Murom Russia. Peter was prince and Fevronia a poor maid a daughter of a beekeeper who made his family living by collecting wild honey in the forest.
Prince Peter was striken by a severe sickness and in a vision it was revealed to him, that the only one that can cure him is Fevronia (a village maid living in the village of Laskovo Russia. The prince went to her and since he saw she is a pious, good and wisdom rich maid promised her, if she manage to heal him to take her as a bride to his place. By her warm prayers to God and herbs, Fevronia succeeded in healing the prince sickness. Being fully restored st.Peter changed his mind and wanted to break his promise to marry her, cause the young made not part of the aristocratic Russian society. He didn't yet reached his home and the sickness, came back. This time with a deep repentance, he came back to Fevronia and she cured him again. Then the prince merried her and made her a princess of Murom
However there love in Christ had to went through high temptations. Once the couple married, the prince proud boyars requested the prince to leave his new bride, as they didn't wanted to accept a simple girl as Fevronia will be governing them. Being in uneasy situation prince Peter prefered to leave his governing power and castle but to stay with his life. Together by boat by the near river Oka they left the kingdom. Soon after Gods wrath came Murom because of people's rebellion and the people requested the chased prince family to be restored to power. Pushed by the peasents, the boyars bringed back the couple to power. The two saints governed their kingdom with great wisdom, love and mercy to the people.
In their old age the decided to become monks in separate monasteries. St. Peter received his new monk name David and princess Fevronia took the nun name Evphrosia (Evfrosia). Even living a sepate monk / nun life the couple continued having a deep love to each other and asked God to take them from this earthly life on the same date. God answered their prayer granting them to depart this earth on the same day in the same hour! Like in life even in death people tried to separate them. Fevronia was put in a coffin in the nun monastery, where Peter was prepared for a monk funeral in the man monastery and they put them in separate graves. In the morning the graves were empty and their bodies were found buried together in one grave. People realized it is Gods will they are buried together and left them buried together. Today the incorruptable bodies of the two saints can be seen and venerated in Holy Trinity's nun monastery in the town of Murom Russia. St. Peter and St. Fevronia are considered patron of the Christian marriage, couple's love and family happiness. It is common that many young people are, asking for the two saints prayer intercession in front of God for getting a good spouse in life and good marriage.
Also the two saints are oftenly asked for prayer for improving a marriege bindings. The two saints feast day is like the Orthodox Antipode of the Roman Catholic feast of couples in love – St. Valentine.
As you see, St. Peter and St. Fevronia living is full of wisdom and true spirituality, and there is plenty we the modern disbelieving people can learn from it. Let God by the two saints holy prayers have mercy on us.
One of the mail servers I’m administrating has problems deliving emails to addresses at @Hotmail.com, @live.com and @msn.com.
That’s quite irritating especially when all of the other major mail servers, Yahoo Mail, Gmail etc. do accept my qmail server messages in their Inbox.
Every email that is addressed to for example hotmail.com is returned back to my sender folder with the message:
Remote host said: 550 SC-001 Unfortunately, messages from 220.127.116.11 weren't
sent. Please contact your Internet service provider since part of their network is
on our block list. You can also refer your provider to
Right after my mail server delivery problems were reported by one of my colleagues, the first step I took was check if my mailserver is listed in some of the major email blacklist databases on the address:http://www.mxtoolbox.com/blacklists.aspx
By opening the above url in a browser and putting a server IP, I was unpleasently notified that my mail server let’s call it with the fiction name mail.server.com is existing in the Spamcannibal blacklist dabase . Spamcannibal as most of the blacklist databases.
To completely reassure myself my server host IP is in spamcannibal, I’ve used spacannibal’s website whois on the urlhttp://www.spamcannibal.org/cannibal.cgi.
Of course this proofed one more time I’m listed in spamcannibal… Thanksfully spamcannibal has a contact form which can be used to delist an IP address from their blacklist right from their website.
After a day of waiting my server IP was removed from spamcannibal blacklist and therefore using the mxtoolbox.com’s website mail server blacklist checker I’ve assured myself the mail server is no longer in the most notable spam blacklist on the net.
I’ve gave another try to deliver an email to my hotmail mail account email@example.com . The mail delivery was unsuccesful again, the qmail failure notice daemon returned my sent email to my firstname.lastname@example.org once again with the error of:
Hi. This is the qmail-send program at mail.server.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
<email@example.com>: Connected to 18.104.22.168 but sender was rejected. Remote host said: 550 SC-001 Unfortunately, messages from 22.214.171.124 weren’t sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors.
— Below this line is a copy of the message. ….
The situation by so far was that I knew for sure my qmail mail server IP is not listed in major spam black lists, but still i couldn’t say for sure that there was no minor blacklist where my ip figurates, neither I was completely sure about the exact requirements microsoft expects from my mail server.
Some of the presumed reasons which could think of could be the cause the hotmail mail delivery failure errors were as follows:
1. My mail server IP had no correct A domain name record or a PTR record
2. My mail server was missing a correct SPF record 3. My dedicated server ISP has some blacklisted dedicated server IPs which belong to the same IP range as the mail server
I’ve walked through each of the 3 expected reasons that might cause the failure but it appeared that my mail server was configured to fullfil each of the 3 aforementioned requirements.
To assure myself each of the failure reasons were untrue I issued the commands:
linux:~# host mail.server.com
mail.server.com has address 126.96.36.199
linux:~# host 188.8.131.52
184.108.40.206.in-addr.arpa domain name pointer mail.server.com.
linux:~# host -t TXT mail.server.com
mail.server.com descriptive text "v=spf1 mx ptr mx:server.com mx:mail.server.com mx:mail2.server.com -all"
Also I used the kitterman.com‘s SPF Query Validation tool located on http://www.kitterman.com/spf/validate.html to make sure my mail server SPF record is correct.
Another way to check if a mail server SPF records are correct is by sending a test email to for gmail.com and check in the email headers.
(To check the email headers in Thunderbird you can press ctrl+U) When the email source appears look for the field Received-SPF: pass (google.com:…. If the field says pass this means your mail server SPF is fine, if it reads uknown or something different this means it’s not fine.
Next you will have to call your ISP and have a tech conversation with the tech support.
As nothing of the above assumed possible failure was checked and I was sure the email server is not affected by them
Further on logically enough I’ve pointed my browser to the http://mail.live.com/mail/troubleshooting.aspx#errors which which was prescribed in the reject email returned from hotmail’s mail server.
On that URL I red the meaning of the Remote host said: 550 SC-001 , Here is what it says:
550 SC-001 Mail rejected by Windows Live Hotmail for policy reasons.
Reasons for rejection may be related to content with spam-like characteristics
or IP/domain reputation. If you are not an email/network admin please contact
your Email/Internet Service Provider for help.
Ain’t helpful is it??! Well I think Microsoft has a tradition of unhelpful manuals and documentation since the yearly days so that hotmail mail server error code explanation wasn’t that unexpected 😉
As I was out of ideas, I joined irc.freenode.net and asked for help in #exim irc channel. Thanks God, there was a guy with an alias cannonball who gave me a good hints which I followed.
First he suggested that I see and join Microsoft’s (Smart Network Data Services) they’re located on https://postmaster.live.com/snds/index.aspx
Thanksfully the Smart Network Data Services could be accessed with my hotmail mail account, credentials, but after logging in to give me a real access to the site content I had to confirm, I’m a legit person and provide an legit email address where I can receive the confirmation.
As this went by in the https://postmaster.live.com/snds/addnetwork.aspx I had to use the buttons Requert Access, View IP Status and View Data to check the status of my mail server IP address 220.127.116.11
After all this struggle in 1. Requesting Access to my IP, View IP Status and View Data I finally found out the guess what unexpected fact that Microsoft’s mail servers has blacklisted my mail server IP Address!, How unexpected was that, heh ?!
So to sum up all this effort of registering in Microsoft SNDS gave me not any further clue on what I can change in my qmail mail server installation to make the user emails deliver to @hotmail.com.
After a bunch of investigation on the net, I’ve found another post which discussess issues with the 550 SC-001 error reason for a failed mail server deliveries to microsoft mail services.
Click over the link above and you will be pointed to Microsoft’s annoying Eform for IP removal from their spam blacklist
The form needs to be filled and after that you can start praying to God to be merciful and push up Microsoft to have a good will and remove your IP from their mail spam blacklists.
The form filling takes about 20 minutes, there are plenty of information you will have to fill in the form but try to be as concrete as possible!
All the form fields are with (*) – asterisk and therefore are a required fields. After I filled up the irritating form, I’ve faced the horror of Microsoft’s Captcha!!!
Honestly I haven’t seen a more bad captcha in my life, I can’t read anything on it, neither I can perceive what word or number it is nor I can grasp whether the captcha shown letter is lower or capital… it’s really a terrible CAPTCHA I tell you! so beware and try to put all your patience in while filling it in.
What made it even worser this damned Microsoft’s IP removal form was the fact that it doesn’t work at all with Opera and Epiphany browsers.
I tried initially to use Epiphany and Opera to post the shitty form but it was no go, it could not post!!! Thank you Microsoft for making your form a platform incompatible, I know you’re really good in that!
I finally launched IceWeasel (Firefox) and filled in the boring form once again and Thanks God this time it was properly posted as you read below:
Sender Information for Hotmail Delivery
E-mail SupportE-mail Support
Thank you for submitting your issue to Support.
Your Support Ticket Number:1151722088 For reference, please print this page or write down your support ticket number. Use this number when communicating with Support about this issue. To make sure that you can receive a reply from Microsoft, add the “microsoft.com” domain to your e-mail “safe list”. If you do not receive a response in your “inbox” within 24 hours, check your “bulk mail” or “junk mail” folders.
Print the page? 😉 I guess Microsoft are not very green company as they suggest you to print it out ? 😉
Now I’m stuck into waiting and hoping that my removal request will be regarded and in a couple of days of time I’ll either hear a word from Microsoft’s tech support or directly get unbanned from their spam black list…. Pfuuu
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