Category Archives: Linux

Spamassassin logs to a different file

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Lately I’ve been looking at my mail logs and noticed that on them it gets written spam, postfix and dovecot messages among other, which is a little uncomfortable. We can use grep to filter, but perhaps a better approach is to send spamassassin logs to a different file.

tail /var/log/mail.log
Oct 16 17:13:11 myserver postfix/smtpd[29869]: connect from unknown[185.234.219.254]
Oct 16 17:13:11 myserver postfix/smtpd[29869]: warning: unknown[185.234.219.254]: SASL LOGIN authentication failed: Invalid authentication mechanism
Oct 16 17:13:11 myserver postfix/smtpd[29869]: lost connection after AUTH from unknown[185.234.219.254]
Oct 16 17:13:11 myserver postfix/smtpd[29869]: disconnect from unknown[185.234.219.254]
Oct 16 17:15:53 myserver postfix/smtpd[29896]: warning: hostname 204.152.209.101.static.quadranet.com does not resolve to address 204.152.209.101
Oct 16 17:15:53 myserver postfix/smtpd[29896]: connect from unknown[204.152.209.101]
Oct 16 17:15:53 myserver postfix/smtpd[29896]: warning: unknown[204.152.209.101]: SASL LOGIN authentication failed: Invalid authentication mechanism
Oct 16 17:15:54 myserver postfix/smtpd[29896]: disconnect from unknown[204.152.209.101]
Oct 16 17:16:41 myserver postfix/smtpd[29896]: warning: hostname unassigned.quadranet.com does not resolve to address 192.161.170.229
Oct 16 17:16:41 myserver postfix/smtpd[29896]: connect from unknown[192.161.170.229]
Oct 16 17:16:42 myserver postfix/smtpd[29896]: Anonymous TLS connection established from unknown[192.161.170.229]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Oct 16 17:17:03 myserver postfix/smtpd[29896]: warning: eotzqh.kylieslowcase.fun.blackhole.securitysage.com: RBL lookup error: Host or domain name not found. Name service error for name=eotzqh.kylieslowcase.fun.blackhole.securitysage.com type=A: Host not found, try again
Oct 16 17:17:05 myserver postfix/smtpd[29896]: DA88C2607C5: client=unknown[192.161.170.229]
Oct 16 17:17:06 myserver postfix/cleanup[29903]: DA88C2607C5: message-id=
Oct 16 17:17:06 myserver postfix/qmgr[1238]: DA88C2607C5: from=, size=32258, nrcpt=1 (queue active)
Oct 16 17:17:06 myserver postfix/smtpd[29896]: disconnect from unknown[192.161.170.229]
Oct 16 17:17:08 myserver postfix/pickup[29368]: 3D6B4260878: uid=5001 from=
Oct 16 17:17:08 myserver postfix/pipe[29904]: DA88C2607C5: to=, relay=spamassassin, delay=26, delays=24/0.01/0/1.9, dsn=2.0.0, status=sent (delivered via spamassassin service)
Oct 16 17:17:08 myserver postfix/qmgr[1238]: DA88C2607C5: removed
Oct 16 17:17:08 myserver postfix/cleanup[29903]: 3D6B4260878: message-id=
Oct 16 17:17:08 myserver postfix/qmgr[1238]: 3D6B4260878: from=, size=32672, nrcpt=1 (queue active)
Oct 16 17:17:08 myserver postfix/pipe[29908]: 3D6B4260878: to=, relay=dovecot, delay=0.22, delays=0.07/0.01/0/0.14, dsn=2.0.0, status=sent (delivered via dovecot service)
Oct 16 17:17:08 myserver postfix/qmgr[1238]: 3D6B4260878: removed
Oct 16 17:17:51 myserver postfix/smtpd[29896]: connect from unknown[185.36.81.87]
Oct 16 17:17:51 myserver postfix/smtpd[29896]: warning: unknown[185.36.81.87]: SASL LOGIN authentication failed: Invalid authentication mechanism
Oct 16 17:17:51 myserver postfix/smtpd[29896]: lost connection after AUTH from unknown[185.36.81.87]
Oct 16 17:17:51 myserver postfix/smtpd[29896]: disconnect from unknown[185.36.81.87]
Oct 16 17:18:49 myserver postfix/smtpd[29896]: connect from unknown[187.55.179.130]
Oct 16 17:18:50 myserver postfix/smtpd[29896]: warning: unknown[187.55.179.130]: SASL LOGIN authentication failed: Invalid authentication mechanism
Oct 16 17:18:50 myserver postfix/smtpd[29896]: lost connection after AUTH from unknown[187.55.179.130]
Oct 16 17:18:50 myserver postfix/smtpd[29896]: disconnect from unknown[187.55.179.130]
Oct 16 17:19:50 myserver postfix/smtpd[29896]: warning: hostname 204.152.209.101.static.quadranet.com does not resolve to address 204.152.209.101
Oct 16 17:19:50 myserver postfix/smtpd[29896]: connect from unknown[204.152.209.101]
Oct 16 17:19:51 myserver postfix/smtpd[29896]: warning: unknown[204.152.209.101]: SASL LOGIN authentication failed: Invalid authentication mechanism
Oct 16 17:19:51 myserver postfix/smtpd[29896]: disconnect from unknown[204.152.209.101]
Oct 16 17:21:21 myserver postfix/anvil[29719]: statistics: max connection rate 1/60s for (smtp:177.143.199.94) at Oct 16 17:12:24

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Allow IFrame in nginx

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So the other day while working on this post I faced the issue that the map wasn’t showing as an IFrame, it was showing nothing but and empty white rectangle. This because by default nginx doesn’t allow X-Frames. In order to do this it is needed to edit file /etc/nginx/snippets/ssl-params.conf and change DENY to SAMEORIGIN as below:

grep "SAMEORI" /etc/nginx/snippets/ssl-params.conf 
add_header X-Frame-Options SAMEORIGIN;

References:
1) Nginx web
2) geekflare.com

Mapping Pirenaica with Folium

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So back in September I cycled through the Pyrenees and decided to map it with Folium. Latitude and longitude info was retrieved from Strava gpx files and cleaned up using sed, grep and awk. Result is a file as below.

head Pirenaica_stage_1.csv
lat,lon
43.3057130,-1.9778780
43.3057130,-1.9778770
43.3057140,-1.9778770
43.3057230,-1.9778880
43.3060960,-1.9783310
43.3064990,-1.9788360
43.3065760,-1.9789890
43.3067630,-1.9791790
43.3069250,-1.9791730

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Primitive way with Folium

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So I discovered Folium about two months ago and decided to map the primitive way with it. Coordinates data is retrieved from Strava gpx files and cleaned up leaving only latitude and longitude as below.

head Camin_prim_stage1.csv
lat,lon
43.3111770,-5.6941620
43.3113360,-5.6943420
43.3114370,-5.6944600
43.3115000,-5.6945420
43.3116970,-5.6948090
43.3119110,-5.6950900
43.3122360,-5.6956830
43.3123220,-5.6958090
43.3126840,-5.6963740

Below is the python file we will use to retrieve data and create the map with the routes.

import folium
from pyspark.sql import SparkSession
from pyspark.sql.functions import col
spark = SparkSession.builder.master("local").getOrCreate()

# Change Spark loglevel
spark.sparkContext.setLogLevel('FATAL')

# Load the rides and ride_routes data from local instead of HDFS
position1 = spark.read.load("/home/user/Camin_prim_stage1.csv", format="csv", sep=",", inferSchema="true", header="true")
position2 = spark.read.load("/home/user/Camin_prim_stage2.csv", format="csv", sep=",", inferSchema="true", header="true")
position3 = spark.read.load("/home/user/Camin_prim_stage3.csv", format="csv", sep=",", inferSchema="true", header="true")

position = [position1, position2, position3]

m = folium.Map()
col=0
colArray=['red','blue','green']

# Check file was correctly loaded
for x in position:
# x.printSchema()
# x.show(2)

# Map position
coordinates = [[float(i.lat), float(i.lon)] for i in x.collect()]

# Make a Folium map
#m = folium.Map()
m.fit_bounds(coordinates, padding=(25, 25))
folium.PolyLine(locations=coordinates, weight=5, color=colArray[col]).add_to(m)
folium.Marker(coordinates[1], popup="Origin").add_to(m)
folium.Marker(coordinates[-1], popup="Destination").add_to(m)
col = col + 1
# Save to an html file
m.save('chamin_prim.html')

# Cleanup
spark.stop()

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Docker in DietPi

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So I was trying to install docker in my raspberry pi with DietPi and initially installed it via repo/aptitude, but that version is pretty old and not supported anymore.

dpkg -l | grep dock
ii  docker.io                      1.3.3~dfsg1-2              armhf        Linux container runtime 

sudo docker version 
Client version: 1.3.3
Client API version: 1.15
Go version (client): go1.3.2
Git commit (client): d344625
OS/Arch (client): linux/arm
Server version: 1.3.3
Server API version: 1.15
Go version (server): go1.3.2
Git commit (server): d344625

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