14,701 reputation
1928
bio website systemajik.com
location Gatineau, Canada
age 59
visits member for 4 years, 9 months
seen 11 hours ago
I have over 30 years experience in all phases of software development and delivery. I have administered a variety of midrange servers, and worked with systems from PCs to Mainframes.

Oct
13
answered dovecot 2.1 new imap folder permissions
Oct
12
comment dovecot 2.1 new imap folder permissions
What is the umask for the dovecot process? This is the usually way to control default permissions on created files.
Oct
12
answered /etc/hosts.deny doesn't take effect everytime
Oct
6
answered SPF settings for subdomains using common mail server
Oct
5
comment SpamAssassin filtering by Exim 4 with virtual user preferences
I block (effectively discard) email with high spam scores. Spam with lower scores gets marked and delivered, as does Bacon. I've been capturing the blocked email for examination, and none of it is legitimate. I do have senders who's configuration is so spammish (amaturish) that I have to whitelist it, but there are few of these, and I attempt to provide feedback.
Oct
5
comment App engine - Naked domain redirect to “www”
@jan You only need one, but if your have an IPv6 address, you need the AAAA record to enable access over IPv6. We are not at the point were most people would want only an AAAA, which would disable access by most users who only have IPv4 addresses and access.
Oct
4
answered App engine - Naked domain redirect to “www”
Oct
4
comment SpamAssassin filtering by Exim 4 with virtual user preferences
If you scan after accepting, then you are likely to create backscatter spam. I had to implement BATV to deal with the volume ofbackscatter scam I was receiving. Also, unless you forward to another server for scanning, the load will be the same, or higher if you scan by recipient. It is possible to identify a fair amount of ham and not scan it.
Oct
3
comment SpamAssassin filtering by Exim 4 with virtual user preferences
@axgomz I use delays starting at connect time for hosts failing reverse DNS validation, or listed in selected blacklists. Very little spam actually makes it to the DATA stage.
Oct
2
comment SpamAssassin filtering by Exim 4 with virtual user preferences
Scanning at SMTP time is no more CPU intensive than scanning at delivery time if you always scan. However, if you want per recipient the scanning must be done at delivery time. Spamd can be configured to use virtual configuration so should not be a significantly heavier load than scanning at SMTP time.
Oct
2
answered NFS lock not working properly
Oct
2
comment Exim mailing list with remote recipients
@JanSegre I would build a local part like listname=sendername=senderdomain=hashvalue. Verified bounces would be forwarded back to sendername@senderdomain. This breaks down quickly if there are multiple forwarding hosts.
Sep
30
comment Exim mailing list with remote recipients
@JanSegre The signed return path will replace the envelope address (MAIL FROM). This should pass SPF validation.
Sep
30
answered Locked out after installing a bash without executable bit
Sep
29
answered Exim mailing list with remote recipients
Sep
28
answered high load average and cpu usage
Sep
28
revised How to update solaris 10 to be safe from shellshock bug?
Comment
Sep
26
revised How to update solaris 10 to be safe from shellshock bug?
New information.
Sep
26
answered How to update solaris 10 to be safe from shellshock bug?
Sep
23
answered Dynamic Network Name Lookup