Been getting a whole lot of these lately

[Maarten]

I have been getting a whole lot of these lately:

Aug 26 21:11:03 supernova MailScanner[3972]: Virus Scanning: Denial Of 
Service attack is in message 7020BA9E8.A8534
Aug 26 21:11:03 supernova MailScanner[4748]: Virus Scanning: Denial Of 
Service attack is in message F2872186B5.A74A0
Aug 26 21:11:03 supernova MailScanner[4227]: Virus Scanning: Denial Of 
Service attack is in message B4FC0A9E3.A9C74
Aug 26 21:11:04 supernova MailScanner[4449]: Virus Scanning: Denial Of 
Service attack is in message 8CFA787BA.A87FA
Aug 26 21:11:05 supernova MailScanner[3558]: Virus Scanning: Denial Of 
Service attack is in message 081851F362.A77AF
Aug 26 21:16:34 supernova MailScanner[4748]: Virus Scanning: Denial Of 
Service attack is in message 8E3B1A9ED.AAB0A
Aug 26 21:16:34 supernova MailScanner[4227]: Virus Scanning: Denial Of 
Service attack is in message 0093146B0.A4AC3
Aug 26 21:16:34 supernova MailScanner[3972]: Virus Scanning: Denial Of 
Service attack is in message C0378A9E9.A88CD
Aug 26 21:16:34 supernova MailScanner[4449]: Virus Scanning: Denial Of 
Service attack is in message 4F7847DD3.A71ED
Aug 26 21:26:41 supernova MailScanner[3972]: Virus Scanning: Denial Of 
Service attack is in message 32A5FA9E7.AB984
Aug 26 21:26:44 supernova MailScanner[4449]: Virus Scanning: Denial Of 
Service attack is in message 1D0521878A.A6398
Aug 26 21:26:51 supernova MailScanner[4748]: Virus Scanning: Denial Of 
Service attack is in message E84D4A9E1.A828D
Aug 26 21:32:08 supernova MailScanner[4449]: Virus Scanning: Denial Of 
Service attack is in message 2192F87A8.A7EF2
Aug 26 21:32:09 supernova MailScanner[3972]: Virus Scanning: Denial Of 
Service attack is in message 0119DA9E2.A7498
Aug 26 21:32:10 supernova MailScanner[4748]: Virus Scanning: Denial Of 
Service attack is in message D3CACA9EC.AA2B8
Aug 26 21:38:10 supernova MailScanner[4748]: Virus Scanning: Denial Of 
Service attack is in message 4669E622A.A7B30
Aug 26 21:38:10 supernova MailScanner[4449]: Virus Scanning: Denial Of 
Service attack is in message 7CD3D20377.A7366
Aug 30 12:56:38 supernova MailScanner[17638]: Virus Scanning: Denial Of 
Service attack is in message E709B20EE3.AF891
Aug 30 12:56:45 supernova MailScanner[17814]: Virus Scanning: Denial Of 
Service attack is in message 40E2C20F00.A0394
Aug 30 12:56:50 supernova MailScanner[13313]: Virus Scanning: Denial Of 
Service attack is in message 7ADFC20377.A10DA
Aug 30 12:56:51 supernova MailScanner[2564]: Virus Scanning: Denial Of 
Service attack is in message CE27B20F08.A07E2
Aug 30 12:56:55 supernova MailScanner[30687]: Virus Scanning: Denial Of 
Service attack is in message 165002036A.A3DB9

When the "Subject: Virus Detected" message arrives I see they are mostly 
system mails one of my services, however also
happened to several emails from a list. When this happens I see that the 
system has run out of memory and is killing
processes. After I reboot the system everything is fine again, it's my 
vps for personal usage so not very heavily used.
It's got 5G ram and 1 vCPU so that should be more any enough for low 
volume usage. I have never had any problems in
the past. Only recently updated from SL7.6 to SL7.7, must be something 
in that update causing problems. Anyone else
been having any problems with getting Denial of Service Attach messages?

Also does anyone know if these selinux contexts have to be allowed for 
MailScanner to function properly?

#============= mscan_t ==============
allow mscan_t antivirus_t:process signal;
allow mscan_t sysfs_t:dir read; --> Don't see why MailScanner is trying 
to read something in sysfs