Re: Sending healty batch emails

2 msg	MASQUERADING FROM BUT NOT TO
3 msg	Probably not a Postfix problem...?
3 msg	Quick question with user/virtual aliases.

Sending healty batch emails
\ Burak Yılmaz (14 Mar 2008)
. \ Evan Platt (14 Mar 2008)
. . \ Andrew Long (15 Mar 2008)
. . . \ (Wietse Venema) (15 Mar 2008)

5 msg	use of relayhost, relaydomain?
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2 msg	Configuring Postfix to Receive Mail from Outloo...
3 msg	tcp_table and propose for new lookup table 'pip...
12 msg	About date spoofing
3 msg	Overriding DNS lookups for a specific domain
2 msg	redirecting a single email address/alias (not a...
1 msg	statistics by client ip address
2 msg	sender+ip restrictions
14 msg	postfix-2.5 RPMs available
1 msg	Setting up Postfix on Solaris 10
8 msg	Yet another virtual domain problem - do not lis...
2 msg	getting a user permissions error
2 msg	551 mail refused

Subject:	Re: Sending healty batch emails
Group:	Postfix-users
From:	(Wietse Venema)
Date:	15 Mar 2008

Andrew Long:
> > if you send say to 40 addresses at once is a good question for that provider.
>
> Sorry to jump thread, but...
>
> I would very interested to see the outline of how to implement
> limiting like this, for instance restricting outbound mail to yahoo
> and hotmail to no more than 40 recips within say 30 minutes while
> allowing a heavier stream to other domains.

There is no example, but there is documentation on the pieces.

Wietse

http://www.postfix.org/postconf.5.html#default_destination_rate_delay
http://www.postfix.org/postconf.5.html#transport_destination_rate_delay
http://www.postfix.org/postconf.5.html#default_destination_recipient_limit
http://www.postfix.org/postconf.5.html#transport_destination_recipient_limit
http://www.postfix.org/transport.5.html
http://www.postfix.org/master.5.html

default_destination_rate_delay (default: 0s)
The default amount of delay that is inserted between indi-
vidual deliveries to the same destination; with per-desti-
nation recipient limit > 1, a destination is a domain,
otherwise it is a recipient.

To enable the delay, specify a non-zero time value (an
integral value plus an optional one-letter suffix that
specifies the time unit).

Time units: s (seconds), m (minutes), h (hours), d (days),
w (weeks). The default time unit is s (seconds).

NOTE: the delay is enforced by the queue manager. The
delay timer state does not survive "postfix reload" or
"postfix stop".

Use transport_destination_rate_delay to specify a trans-
port-specific override, where transport is the master.cf
name of the message delivery transport.

This feature is available in Postfix 2.5 and later.

default_destination_recipient_limit (default: 50)
The default maximal number of recipients per message
delivery. This is the default limit for delivery via the
lmtp(8), pipe(8), smtp(8) and virtual(8) delivery agents.

Setting this parameter to a value of 1 changes the meaning
of the corresponding per-destination concurrency limit
from concurrency per domain into concurrency per recipi-
ent.

Use transport_destination_recipient_limit to specify a
transport-specific override, where transport is the mas-
ter.cf name of the message delivery transport.