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Apr
17
comment Does the OS X DHCP client support classless static routes (RFC3442)?
DHCP is modelled on the client saying "give me this list of options" and the server only returning the values it has for that list of options. You can tell the server to forcibly include a parameter even when not included in the parameter request list. For ISC dhcpd, this might be done with option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list, 79) to add 0x79 (121, CIDR route list) to the list. For dnsmasq, you'd specify the option with dhcp-option-force=... instead of dhcp-option=...
Dec
10
awarded  Yearling
Nov
13
awarded  Nice Answer
Jun
20
comment Most simple way of extracting substring in Unix shell?
Yes, expr(1) is the obvious example of "use external commands", but it gets "interesting" to safely capture values which can contain arbitrary characters.
Apr
13
comment Encrypt git repository on server (safe against theft of physical hardware)
Try github.com/AGWA/git-crypt instead -- uses CTR mode and understands crypto rather better; it leaves the local repo unencrypted in the working tree, via the smudge/clean filters.
Jan
31
comment Exim ACL to limit sender to send mail only to localdomain
nwildlsearch only treats entries as regexps if they start with a circumflex ^
Jan
31
answered How to fix corrupt packet error for with rsync for (relatively) large files?
Dec
10
awarded  Yearling
Oct
25
answered Global Email Forwarding with EXIM?
Oct
25
answered EXIM - Send local mail to Gateway First
Oct
25
answered Exim + Spamassassin, automatically throttle spammy IP addresses
Oct
25
comment Exim forwards not going out through TLS
No, hosts_require_tls is an SMTP Transport option, it needs to be set on a particular transport, it can not be set in the main section of the configuration. There are no general rules that Transport options can be set in Main.
Oct
25
answered Exim forwards not going out through TLS
Oct
9
comment tar leading period slash
If you don't have a tar with --xform, then you might have the pax(1) command instead, which has a similar option.
Sep
17
comment exim4 smarthost with sender verification
Sounds as though, if your domain is example.org, you are relaying for example.org but are also primary MX. You can add a second verify_only router for domains = example.org and figure out how to verify only the left-hand-sides you want. This will also fix a second problem which you must then currently have: you're accepting email for anything@example.org and leaving it until later for a bounce to be generated if anything is not valid. If you avoid accepting responsibility for mail that can't ever be delivered, you avoid becoming a source of backscatter.
Sep
15
answered exim4 smarthost with sender verification
Sep
5
answered Any software/proxy that can do SMTP failover?
Sep
5
revised exim wiki description
Expanded text (matching proposed new stackoverflow text, aside from removing reference to here); removes reference to dead website, significantly expands and structures everything else.
Sep
5
suggested approved edit on exim tag wiki
May
3
awarded  Nice Answer