On 03.11.20 11:26, natan wrote:
For test I create aliasgroup ~100 user. For test i try send like:
for i in {1..10}; do echo "asdasdasdasda" |mail
aliasgr...@domain.ltd;done & (for test x 4) - I known this is stupid
In log i found "Connection timed out" and I dont known what value exceeds
10.0.100.5 - this is dovecot with lmtp to deliver
main.cf:
....
virtual_transport = lmtp:inet:10.0.100.5:24
lmtp_destination_concurrency_limit = 100 - > probably this is value - but I may
be wrong - maby check this value to 600 ?
default_destination_concurrency_limit = 100
lmtp_destination_recipient_limit = 1
.....
master.cf:
....
smtp inet n - y - 100 smtpd
-o receive_override_options=no_address_mappings
....
In log I found:
Nov 3 10:42:07 thebe4 postfix/lmtp[29734]: 4CQPvC3gPyz20nRG:
to=<user....@domain.ltd>, orig_to=<aliasgr...@domain.ltd>, relay=none,
delay=7.7, delays=0.25/0.28/7.1/0, dsn=4.4.1, status=deferred (connect
to 10.0.100.5[10.0.100.5]:24: Connection timed out)
"connection timed out " means that postfix wasn't able to connect to
destination. That could be caused by firewall, nothing listening on destination
port, or the destination server has reached limit and does not accept
connections.
increasing concurrency limit on the postfix side does not help here.
Increasing maximum number of servers on port 24 could help in the last case.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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