Afternoon All,
I have an interesting problem delivering large quantities of email to
Hotmail and related addresses from Mailman. It seems like the sort of
thing which would already have been solved but I can't spot it in the
manuals.
The problem comes from Exim being rather clever at keeping track of
which hosts on a huge list of deliveries to use: it organises the
deliveries in the best order to minimise the number of connections.
What happens then is Hotmail will start 'temporarily' blocking every
time I swamp it and it can take several days for deliveries to complete.
The best I seem to be able to do it reduce the number of parallel
deliveries, though what I'd really like to do is totally randomise the
delivery pattern.
The transport config below seems to be the best I can come up with from
the docs, but I'm hoping there's something I've missed - has anyone else
here tried this to Hotmail?
Thanks very much in advance!
Cheers,
-Oli
remote_smtp:
driver = smtp
hosts_avoid_tls = *
# Timeout waiting for response to any command, including initial banner
command_timeout = 15s
# Timeout waiting for initial TCP connection
connect_timeout = 20s
# Timeout waiting for each data block to be transmitted
# This defaults to five minutes. It is affected by message size
# and our connection. We should be transmitting very small messages.
data_timeout = 20s
# Timeout waiting for final '.' of data connection.
# May need to wait for virus/spam scanners here, so allow a bit more
final_timeout = 30s
# Send messages to the same host singularly. Hotmail and others
# firewall us otherwise.
max_rcpt = 1
connection_max_messages = 1
multi_domain = false
--
Oli Comber
Systems Developer
3aIT Limited - Official Corporate Sponsor of the British Bobsleigh Team
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