OT: going offline

Sorry if this doesn't belong here, but I'm just wondering how the conlang
listserv works w.r.t. mail server downtime.

Yesterday, I had to physically relocate my machine, and was disconnected
for about 7-9 hours. The email address subscribed to the conlang list goes
directly to my machine, which means that during those 7-9 hours, any
incoming mail would bounce. When I finally reconnected last night, I was
expecting incoming mail to be delivered, since that's what the conlang
listserv has been doing when I had downtime before. However, nothing from
conlang arrived, so this morning I checked and found out I've been
unsubscribed from the list.

I'm not complaining about being unsubscribed, since I know that extended
MX downtime isn't exactly the most tolerable thing to listserv admins.
However, I'm curious to know what made the difference last night that
caused unsubscription, when previously the conlang listserv would just
re-deliver the mail later?

The only *plausible* reason I can think of so far is the fact that I reset
my (dynamic) DNS record in advance this time, because I knew I was going
offline. (Rather than previously, when I would get disconnected from time
to time by my ISP without warning, which leaves a non-functional DNS
record.) This has the effect of causing DNS lookups of my domain to return
a non-existence error. Is this why I got unsubscribed? (Want to know so I
can prevent this in future.)

And sorry that this is totally off-topic... but hey, we've veered
off-topic a lot recently haven't we? *ducks* :-P


T