>>> I set up one small VPS as an alternate outgoing mail server for those
>>> times when our main mailservers gets blacklisted
>On 04/02/13 02:24, Matus UHLAR - fantomas wrote:
>> What do you mean by "outgoing" mail?
On 02.04.13 12:20, Mark Constable wrote:
>Mail in to this server via ports 587/465 and out to the rest of the world.
I gave two possible explanations, did you accept either? :-)
I assume you require SMTP authentication on your server (it's even better than
allowing connections only from your network, and needed when your clients
can connect from outside), so only authenticated clients can send mail via
this server.
>> The allowed ports only depend on your clients' mail configuration, if they
>> only send mail using 587/submission, you don't need other ports open.
>
>I guesss what I don't understand is that this server will "send" mail to
>other mailservers from it's port 25 (I presume) so it needs to be open.
No, your server will connect from random ports to other mailservers' SMTP.
>> However: you don't need to have extra server, you can change outgoing IP on
>> your mailserver by specifying SOURCE_ADDRESS= in ${ETC}/courier, if you get
>> into problems. This means nobody has to change configuration of its client.
>
><blink> Really! I was unaware of this setting so maybe my Debian stable
>version 0.65.0 does not have this setting. My configs do not have it although
>they are probably up to 5 years old now.
>
>Would you or Sam mind confirming when SOURCE_ADDRESS became available?
/etc/courier/courierd afaik. While Sam mentioned new configuration file for
outgoing mail in 0.68, Debian version (0.65) apparently does not support
that yet. You need to change SOURCE_ADDRESS= there and restart courier
process (courier restart should do that, no need to restart listeners)
--
Matus UHLAR - fantomas, [email protected] ; http://www.fantomas.sk/
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