Mailscanner passing a virus

[William D. Colburn]

On Thu, Dec 19, 2019 at 10:18:24PM +0100, Antony Stone wrote:
>Did the same thing appear for the initial delivery to the "user"?

We have three border mailscanners, and only my mailscanner is detecting
the virus.  The original came through one of the others and passed into
exchange.  It looks like the virus definition came shortly after it was
arrived.  So, the answer is no.

>Presumably this *does* happen when you send something such as EICAR into the 
>same address?

I haven't tried an EICAR, but we get lots of viruses, and I see lots of
{VIRUS?} tags in the procmail logs for the server, and I verified that a
mail seen as a virus in the maillogs was tagged as a virus in the
subject.  So that is working in general.

>Show us your MailScanner config file, and tell us how MailScanner is connected 
>in to your mail delivery system, as a start.

I'll attach the mailscanner.conf

--Schlake
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%org-name% = NRAO-AOC
%org-long-name% = National Radio Astronomy Observatory: Socorro, New Mexico
%web-site% = https://info.nrao.edu/computing/guide/MAIL/spam
%etc-dir% = /etc/MailScanner
%report-dir% = /usr/share/MailScanner/reports/en
%rules-dir% = /etc/MailScanner/rules
%mcp-dir% = /etc/MailScanner/mcp
Max Children = 10
Run As User =
Run As Group =
Queue Scan Interval = 5
Incoming Queue Dir = /var/spool/mqueue.in
Outgoing Queue Dir = /var/spool/mqueue
Incoming Work Dir = /var/spool/MailScanner/incoming
Quarantine Dir = /var/spool/MailScanner/quarantine
PID file = /var/run/MailScanner.pid
Restart Every = 7200
MTA = sendmail
Sendmail = /usr/lib/sendmail
Sendmail2 = /usr/lib/sendmail
Incoming Work User =
Incoming Work Group = mtagroup
Incoming Work Permissions = 0660
Quarantine User =
Quarantine Group =
Quarantine Permissions = 0660
Max Unscanned Bytes Per Scan = 130m
Max Unsafe Bytes Per Scan = 50m
Max Unscanned Messages Per Scan = 30
Max Unsafe Messages Per Scan = 30
Max Normal Queue Size = 800
Scan Messages = yes
Reject Message = no
Maximum Processing Attempts = 6
Processing Attempts Database = /var/spool/MailScanner/incoming/Processing.db
Maximum Attachments Per Message = 200
Expand TNEF = yes
Use TNEF Contents = replace
Deliver Unparsable TNEF = no
TNEF Expander = /usr/bin/tnef --maxsize=100000000
TNEF Timeout = 30
File Command = /usr/bin/file
File Timeout = 20
Gunzip Command = /bin/gunzip
Gunzip Timeout = 50
Unrar Command = /usr/bin/unrar
Unrar Timeout = 50
Find UU-Encoded Files = no
Maximum Message Size = 104857600
Maximum Attachment Size = 104857600
Minimum Attachment Size = -1
Maximum Archive Depth = 4
Find Archives By Content = yes
Unpack Microsoft Documents = yes
Zip Attachments = no
Attachments Zip Filename = MessageAttachments.zip
Attachments Min Total Size To Zip = 100k
Attachment Extensions Not To Zip = .zip .rar .gz .tgz .jpg .jpeg .mpg .mpe .mpeg .mp3 .rpm .htm .html .eml
Add Text Of Doc = no
Antiword = /usr/bin/antiword -f
Antiword Timeout = 50
Unzip Maximum Files Per Archive = 0
Unzip Maximum File Size = 50k
Unzip Filenames = *.txt *.ini *.log *.csv
Unzip MimeType = text/plain
Virus Scanning = yes
Virus Scanners = sophos
Virus Scanner Timeout = 300
Deliver Disinfected Files = yes
Silent Viruses = HTML-IFrame
Still Deliver Silent Viruses = yes
Non-Forging Viruses = Joke/ OF97/ WM97/ W97M/ eicar
Spam-Virus Header = X-%org-name%-MailScanner-SpamVirus-Report:
Virus Names Which Are Spam = Sane*UNOFFICIAL HTML/* *Phish*
Block Encrypted Messages = no
Block Unencrypted Messages = no
Allow Password-Protected Archives = %rules-dir%/password-protected.rules
Check Filenames In Password-Protected Archives = yes
Allowed Sophos Error Messages = "Password protected file", "Message contained password-protected archive", "Attempt to hide real filename extension"
Sophos IDE Dir = /opt/services/sophos-av/lib/sav
Sophos Lib Dir = /opt/services/sophos-av/lib
Monitors For Sophos Updates = /opt/services/sophos-av/lib/sav/*.ide
Monitors for ClamAV Updates = /usr/local/share/clamav/*.cld /usr/local/share/clamav/*.cvd /var/lib/clamav/*.inc/* /var/lib/clamav/*.?db /var/lib/clamav/*.cvd
ClamAVmodule Maximum Recursion Level = 8
ClamAVmodule Maximum Files = 1000
ClamAVmodule Maximum File Size = 10000000 # (10 Mbytes)
ClamAVmodule Maximum Compression Ratio = 250
Clamd Port = 3310
Clamd Socket = /var/run/clamav/clamd.sock
Clamd Lock File = # /var/lock/subsys/clamd
Clamd Use Threads = yes
ClamAV Full Message Scan = yes
Fpscand Port = 10200
Dangerous Content Scanning = %rules-dir%/disarmscripts.rules
Allow Partial Messages = no
Allow External Message Bodies = no
Find Phishing Fraud = yes
Also Find Numeric Phishing = yes
Use Stricter Phishing Net = yes
Highlight Phishing Fraud = yes
Phishing Safe Sites File = %etc-dir%/phishing.safe.sites.conf
Phishing Bad Sites File = %etc-dir%/phishing.bad.sites.conf
Country Sub-Domains List = %etc-dir%/country.domains.conf
Allow IFrame Tags = yes
Allow Form Tags = yes
Allow Script Tags = disarm
Allow WebBugs = disarm
Ignored Web Bug Filenames = spacer pixel.gif pixel.png gap shim
Known Web Bug Servers = msgtag.com
Web Bug Replacement = http://www.nrao.edu/1x1spacer.gif
Allow Object Codebase Tags = no
Convert Dangerous HTML To Text = no
Convert HTML To Text = no
Archives Are = zip rar ole
Allow Filenames =
Deny Filenames =
Filename Rules = %etc-dir%/filename.rules.conf
Allow Filetypes =
Allow File MIME Types =
Deny Filetypes =
Deny File MIME Types =
Filetype Rules = %etc-dir%/filetype.rules.conf
Archives: Allow Filenames =
Archives: Deny Filenames =
Archives: Filename Rules = %etc-dir%/archives.filename.rules.conf
Archives: Allow Filetypes =
Archives: Allow File MIME Types =
Archives: Deny Filetypes =
Archives: Deny File MIME Types =
Archives: Filetype Rules = %etc-dir%/archives.filetype.rules.conf
Default Rename Pattern = __FILENAME__.disarmed
Quarantine Infections = yes
Quarantine Silent Viruses = yes
Quarantine Modified Body = no
Quarantine Whole Message = yes
Quarantine Whole Messages As Queue Files = yes
Keep Spam And MCP Archive Clean = no
Language Strings = %report-dir%/languages.conf
Rejection Report = %report-dir%/rejection.report.txt
Deleted Bad Content Message Report  = %report-dir%/deleted.content.message.txt
Deleted Bad Filename Message Report = %report-dir%/deleted.filename.message.txt
Deleted Virus Message Report        = %report-dir%/deleted.virus.message.txt
Deleted Size Message Report         = %report-dir%/deleted.size.message.txt
Stored Bad Content Message Report  = %report-dir%/stored.content.message.txt
Stored Bad Filename Message Report = %report-dir%/stored.filename.message.txt
Stored Virus Message Report        = %report-dir%/stored.virus.message.txt
Stored Size Message Report         = %report-dir%/stored.size.message.txt
Disinfected Report = %report-dir%/disinfected.report.txt
Signature Image Filename = %report-dir%/sig.jpg
Signature Image <img> Filename = signature.jpg
Inline HTML Warning = %report-dir%/inline.warning.html
Inline Text Warning = %report-dir%/inline.warning.txt
Sender Content Report      = %report-dir%/sender.content.report.txt
Sender Error Report        = %report-dir%/sender.error.report.txt
Sender Bad Filename Report = %report-dir%/sender.filename.report.txt
Sender Virus Report        = %report-dir%/sender.virus.report.txt
Sender Size Report         = %report-dir%/sender.size.report.txt
Hide Incoming Work Dir = yes
Include Scanner Name In Reports = no
Mail Header = X-MailScanner:
Spam Header = X-%org-name%-MailScanner-SpamCheck:
Spam Score Header = X-MailScanner-SpamScore:
Information Header = X-MailScanner-Information:
Add Envelope From Header = yes
Add Envelope To Header = no
Envelope From Header = X-MailScanner-From:
Envelope To Header = X-MailScanner-To:
ID Header = 
IP Protocol Version Header = # X-%org-name%-MailScanner-IP-Protocol:
Spam Score Character = s
SpamScore Number Instead Of Stars = no
Minimum Stars If On Spam List = 5
Clean Header Value       = Found to be clean
Infected Header Value    = Found to be infected
Disinfected Header Value = Disinfected
Information Header Value = Please contact the postmaster at aoc.nrao.edu for more information
Detailed Spam Report = yes
Include Scores In SpamAssassin Report = yes
Always Include SpamAssassin Report = yes
Multiple Headers = add
Place New Headers At Top Of Message = no
Hostname = The %org-name% MailScanner
Sign Messages Already Processed = no
Sign Clean Messages = no
Attach Image To Signature = no
Attach Image To HTML Message Only = yes
Allow Multiple HTML Signatures = no
Dont Sign HTML If Headers Exist = # In-Reply-To: References:
Mark Infected Messages = yes
Mark Unscanned Messages = yes
Unscanned Header Value = Not scanned: please contact postmaster at aoc.nrao.edu for details
Remove These Headers =
Deliver Cleaned Messages = yes
Notify Senders = yes
Notify Senders Of Viruses = no
Notify Senders Of Blocked Filenames Or Filetypes = no
Notify Senders Of Blocked Size Attachments = yes
Notify Senders Of Other Blocked Content = no
Never Notify Senders Of Precedence = list bulk
Scanned Modify Subject = no # end
Scanned Subject Text = {Scanned}
Virus Modify Subject = start
Virus Subject Text = {VIRUS?}
Filename Modify Subject = start
Filename Subject Text = {VIRUS?}
Content Modify Subject = start
Content Subject Text = {Dangerous Content?}
Size Modify Subject = start
Size Subject Text = {SIZE!}
Disarmed Modify Subject = start
Disarmed Subject Text = {Disarmed}
Phishing Modify Subject = no
Phishing Subject Text = {Fraud?}
Spam Modify Subject = start
Spam Subject Text = {SPAM?}
High Scoring Spam Modify Subject = start
High Scoring Spam Subject Text = {SPAM?}
Warning Is Attachment = yes
Attachment Warning Filename = %org-name%-Attachment-Warning.txt
Attachment Encoding Charset = ISO-8859-1
Archive Mail =
Missing Mail Archive Is = directory
Send Notices = no
Notices Include Full Headers = yes
Hide Incoming Work Dir in Notices = no
Notice Signature = -- \nMailScanner\nEmail Virus Scanner\nwww.mailscanner.info
Notices From = MailScanner
Notices To = postmaster at aoc.nrao.edu
Local Postmaster = postmaster at aoc.nrao.edu
Spam List Definitions = %etc-dir%/spam.lists.conf
Virus Scanner Definitions = %etc-dir%/virus.scanners.conf
Spam Checks = yes
Spam List = SPAMHAUS
Spam Domain List =
Spam Lists To Be Spam = 1
Spam Lists To Reach High Score = 5
Spam List Timeout = 10
Max Spam List Timeouts = 7
Spam List Timeouts History = 10
Is Definitely Not Spam = %rules-dir%/spam.whitelist.rules
Is Definitely Spam = no
Definite Spam Is High Scoring = no
Ignore Spam Whitelist If Recipients Exceed = 20
Max Spam Check Size = 2048k
Use Watermarking = no
Add Watermark = yes
Check Watermarks With No Sender = yes
Treat Invalid Watermarks With No Sender as Spam = nothing
Check Watermarks To Skip Spam Checks = yes
Watermark Secret = %org-name%-Secret
Watermark Lifetime = 604800
Watermark Header = X-%org-name%-MailScanner-Watermark:
Use SpamAssassin = yes
Max SpamAssassin Size = 200k trackback
Required SpamAssassin Score = 5
High SpamAssassin Score = 10
SpamAssassin Auto Whitelist = no
SpamAssassin Timeout = 900
Max SpamAssassin Timeouts = 10
SpamAssassin Timeouts History = 30
Check SpamAssassin If On Spam List = no
Include Binary Attachments In SpamAssassin = no
Spam Score = yes
Cache SpamAssassin Results = yes
SpamAssassin Cache Database File = /var/spool/MailScanner/incoming/SpamAssassin.cache.db
Rebuild Bayes Every = 0
Wait During Bayes Rebuild = no
Use Custom Spam Scanner = no
Max Custom Spam Scanner Size = 20k
Custom Spam Scanner Timeout = 20
Max Custom Spam Scanner Timeouts = 10
Custom Spam Scanner Timeout History = 20
Spam Actions = deliver header "X-Spam-Status: Yes"
High Scoring Spam Actions = deliver header "X-Spam-Status: Yes"
Non Spam Actions = deliver header "X-Spam-Status: No"
SpamAssassin Rule Actions =
Sender Spam Report         = %report-dir%/sender.spam.report.txt
Sender Spam List Report    = %report-dir%/sender.spam.rbl.report.txt
Sender SpamAssassin Report = %report-dir%/sender.spam.sa.report.txt
Inline Spam Warning = %report-dir%/inline.spam.warning.txt
Recipient Spam Report = %report-dir%/recipient.spam.report.txt
Enable Spam Bounce = %rules-dir%/bounce.rules
Bounce Spam As Attachment = no
Syslog Facility = mail
Log Speed = no
Log Spam = yes
Log Non Spam = yes
Log Delivery And Non-Delivery = no
Log Permitted Filenames = no
Log Permitted Filetypes = no
Log Permitted File MIME Types = no
Log Silent Viruses = no
Log Dangerous HTML Tags = no
Log SpamAssassin Rule Actions = yes
SpamAssassin Temporary Dir = /var/spool/MailScanner/incoming/SpamAssassin-Temp
SpamAssassin User State Dir =
SpamAssassin Install Prefix =
SpamAssassin Site Rules Dir = /etc/mail/spamassassin
SpamAssassin Local Rules Dir =
SpamAssassin Local State Dir = # /var/lib/spamassassin
SpamAssassin Default Rules Dir =
DB DSN =
DB Username =
DB Password =
SQL Serial Number =
SQL Quick Peek =
SQL Config =
SQL Ruleset =
SQL SpamAssassin Config =
SQL Debug = no
MCP Checks = no
First Check = spam
MCP Required SpamAssassin Score = 1
MCP High SpamAssassin Score = 10
MCP Error Score = 1
MCP Header = X-%org-name%-MailScanner-MCPCheck:
Non MCP Actions = deliver
MCP Actions = deliver
High Scoring MCP Actions = deliver
Bounce MCP As Attachment = no
MCP Modify Subject = start
MCP Subject Text = {MCP?}
High Scoring MCP Modify Subject = start
High Scoring MCP Subject Text = {MCP?}
Is Definitely MCP = no
Is Definitely Not MCP = no
Definite MCP Is High Scoring = no
Always Include MCP Report = no
Detailed MCP Report = yes
Include Scores In MCP Report = no
Log MCP = no
MCP Max SpamAssassin Timeouts = 20
MCP Max SpamAssassin Size = 100k
MCP SpamAssassin Timeout = 10
MCP SpamAssassin Prefs File = %mcp-dir%/mcp.spamassassin.conf
MCP SpamAssassin User State Dir =
MCP SpamAssassin Local Rules Dir = %mcp-dir%
MCP SpamAssassin Default Rules Dir = %mcp-dir%
MCP SpamAssassin Install Prefix = %mcp-dir%
Recipient MCP Report = %report-dir%/recipient.mcp.report.txt
Sender MCP Report = %report-dir%/sender.mcp.report.txt
Use Default Rules With Multiple Recipients = no
Read IP Address From Received Header = no
Spam Score Number Format = %d
MailScanner Version Number = 5.0.3
SpamAssassin Cache Timings = 1800,300,10800,172800,600
Debug = no
Debug SpamAssassin = no
Run In Foreground = no
Always Looked Up Last = no
Always Looked Up Last After Batch = no
Deliver In Background = yes
Delivery Method = batch
Split Exim Spool = no
Lockfile Dir = /var/spool/MailScanner/incoming/Locks
Custom Functions Dir = /usr/share/MailScanner/perl/custom
Lock Type = 
Syslog Socket Type =
Automatic Syntax Check = yes
Minimum Code Status = supported
include /etc/MailScanner/conf.d/*