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Questions tagged [smarthost]

81 questions
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Why are out of office mails accepted by receiver when they bypass postfix smart host?

With internal recipients everything works great. Exchange 2010 Out of office mails are sent and received. For external recipients, out of office mails are sent OK but they are not accepted by the external recipients : said: 550 Requested action not…
Philipili
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Postfix sendmail -f configuration

I have Postfix installed on two servers. One of them writes e-mail (satellite) and the other one delivers the e-mails (smarthost). When I write e-mail from the satellite server I'm using the sendmail command. My problem is that when e-mail arrives…
William
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How to get LAN server to send out via smarthost?

I've got a server on my LAN runnnig exim4 configured to use a smarthost on the WAN like…
TommyPeanuts
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IIS 6.0 SMTP Virtual Server do not AUTH on Smart Host

We're using IIS 6.0 SMTP Virtual Server to receive and forward e-mails from our website hosted on the same dedicated machine. Everything worked fine, up until we recently transfered the e-mail service to Online.net (that also hosts our dedicated web…
Andrei M
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Postfix as a smart host? Is this possible

We have 3 SMTP servers on 3 separate public static ip's. We have a secondary failover connection on a single static ip. I would like to put all 3 SMTP servers behind the router and off the public ip's, use postfix to accept mail on both main…
Squid_Vicious
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Exim4: Local delivery after spamcheck of an outgoing email

domain.com and domain.net are hosted on one and the same server server1. To avoid SPAM and viruses all outgoing emails (even to local domains) are subjects to scan with a 3rd party service. Thus email from mail@domain.com to mail@domain.net should…
Alex
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Exchange route mail to internal smart host

We have a BI/ETL tool which is capable of triggering tasks on receipt of an email. We have a number of servers set up running this tool. Each is configured as an IIS 'smart host'. We currently use a commercial spam tool to route emails sent to a…
user334651
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exim: different password for remote smtp relay smarthost

Currently I have my exim configuration set to send all e-mails using an external SMTP server. All users authenticate with my exim server with a local password and then the messages sent is relayed through a smarthost to a remote SMTP server, which…
Jacob
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Smarthost percentage of mail on Exim4

I'm transitioning mailing of a sizeable number of mails (maybe 1m/day) to another host. I want to warm up the new host gradually over a month rather than suddenly start sending through it and appear to be a spammer. Is there any way to tell exim to…
Edward Hibbert
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Postfix: As a smarthost, how can I limit incoming mail to sender domain and sender IP?

I'm running a Postfix+Dovecot service on Centos 7 with a few unrelated virtual domains. This same Postfix server is also set as a smarthost (relay) for IP 192.0.2.2 and 203.0.113.2. Right now, whatever mail IP 192.0.2.2 sends, my Postfix relays…
Matrix
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On debian, how to set up a MTA like exim that allows per user smarthost configuration?

I have a problem setting up something that I think would be cool. I have a server (Debian Wheezy) and I would like to let my users send email from their smarthosts. From what I have read, exim allow the definition of mulitple smarthost and select…
ncenerar
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exim4 - Why is rate limiting outbound mail to a smarthost only working with acl_not_smtp?

In an effort to rate limit outgoing emails per recipient (all emails are sent by the same user), I've been doing some testing in a very simple environment: The Webs …
billyw
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Sendmail smarthost making my big mails sent AND stuck

In order to send my mails from my local Sendmail server to external address, I make it connecting to an authentified SMART HOST provided by my ISP. The sendmail.cf has the following DS line : DS[smtp.xxxxxxxxx.org] and the authinfo file contains…
jpicaude
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Set up Exim to authenticate users and then relay SMTP mail via smarthost using different auth

I am attempting to use Exim to function as an SMTP server which relays mail as a smarthost to our Mandrill service. (The point of this would be using Exim to authenticate our users for IMAP mail and auth them against our LDAP server while relying on…
Christian Sieber
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SPF + ISP Smarthost, always untrusted?

One of the ways mail-servers protect themselves from spam is by SPF-records, a DNS look-up saying what ip-adresses are allowed to send mail from a given domain name. Another way the mail-servers use is blacklisting, some of those blacklist have list…
Puggan Se
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