On 3/5/2011 9:42 PM, Steve Jenkins wrote:
On Sat, Mar 5, 2011 at 12:04 PM,<end...@gmail.com> wrote:
Yes, I'll try. I hope that the upstream will accept it, they have a very low
(and weird) rate policy
This thread was helpful for me, too, since I'm trying to make sure our
Postfix settings are compliant with Yahoo!'s guidelines. Their
Postmaster site says:
"Yahoo! Mail accepts a maximum of 20 messages per SMTP connection. We
encourage you to cap the number of messages you send to Yahoo! Mail to
fall within this per-connection limit.
When this limit is reached, no further messages will be accepted for
delivery as our server automatically terminates the connection
(without giving an error code). If you are sending messages to a
significant number of Yahoo! Mail users, the suggestions below will
help ensure uninterrupted delivery for your messages."
So, since the default_destination_concurrency_limit = 20 on my system,
This is concurrency, or simultaneous parallel connections.
This does not control messages per connection.
do I not need to worry about setting up a custom transport for Yahoo!?
Or have others on this list found that creating a transport for Yahoo!
with additional custom settings has been helpful when delivering to
them with Postfix?
This depends on your volume of mail to yahoo.
At fairly low volumes to yahoo, the default settings will work
well enough -- some mail may be deferred, but it should all go
through in a reasonable amount of time.
If you are sending enough mail that the default settings are
not giving satisfactory performance, some a custom transport
and signing up for their feedback loop may improve things.
This has been discussed here frequently; check the archives if
you need details.
