421 4.5.1 No more messages on this connection http://tele.dk/25153
tele.dk is an ISP from Denmark. As per the Postmaster guidelines, tele.dk mail servers do not accept more than 3 messages per connection, if you attempt to send more emails, you would get the following error message :
421 4.5.1 No more messages on this connection, see http://tele.dk/25153
The following quick How-to explains, how to configure Postfix to limit number of messages per smtp connection / session to danish domains which are hosted by tele.dk.
Note: The following configurations worked on Postfix 3.2.3.
Add the following to /etc/postfix/main.cf
# mail.dk transport
transport_maps = hash:/etc/postfix/transport
teledk_initial_destination_concurrency = 3
teledk_destination_concurrency_limit = 3
Add the following to /etc/postfix/transport
.mail.dk teledk:
.tdcadsl.dk teledk:
.tele.d teledk:
.dknet.dk teledk:
youseeme.dk teledk:
besked.com teledk:
beskedboks.dk teledk:
You can add more domains by reviewing logs. These are some of common domains. “.mail.dk” refers to any subdomain.
Add the following to /etc/postfix/master.cf
teledk unix - - n - - smtp
Update lookup table
postmap hash:/etc/postfix/transport
Reload Postfix
systemctl reload postfix
Online casinos that have games with real money on offer
ReplyDeleteLive Casino. Livecasino. Live casino games with real money on offer is a 카지노사이트luckclub big part of the world of online gambling, which is what makes