2
votes
1answer
57 views

Postfix multiple checks

I want to achieve the following with Postfix: Run all emails through a black list Allow any clients sending to a list of domains Allow some clients sending to any domain This is what I have: ...
1
vote
0answers
47 views

When does Postfix not perform lookups in virtual_alias_maps?

I'm having a real pickle of a problem: I have a Postfix 2.6.6 / CentOS 6 server that's set up to forward mail from specific aliases to specific destinations. This is done through a mysql ...
1
vote
1answer
39 views

Exchange 2010: Send emails via STMP with custom From address to outside the domain

The requirement(s): (1) Connect to Exchange via STMP and (2) basic authentication and send emails with a (3) custom From address to (4) recipients outside the domain. I was able to get (1) - (3) ...
1
vote
1answer
31 views

Postfix Relay Based on Recepient

What is the best practice when one has to implement this sort of ruleset in postfix? Email sent to a@example.com, b@example.com, etc ought to be relayed to smtp.a.example.com. Email sent to ...
2
votes
1answer
53 views

SMTP routing cases: same @domain as sender and different @domain

I would like to know what is the difference between sending an email to the same @domain as the sender and sending to a different domain. I cant really find a detailed explanation on the web. From ...
0
votes
2answers
1k views

SMTP -> ERROR: RCPT not accepted from server: 554 5.7.1 : Client host rejected: Access denied

I am trying to send mail through phpmailer with smtp.i am using the host which i am using on my outlook with same username and password.I am getting an error .can anyone help me how to fix this. My ...
0
votes
0answers
29 views

Mail server in the middle responsible for translating from one domain to another

The title is a little confusing. We have an internal mail server that can be used to send mail. This internal mail server is only accessible from within our firewall unless we use the mail server's ...
0
votes
1answer
638 views

Postfix with relayhost - relay access denied for bounces

I have set up a Postfix Mailserver, outgoing mail is being sent through a smarthost/relayhost which requires authentification. That works great, internal clients can send to foreign recipients though ...
0
votes
2answers
397 views

Can I send email unauthenticated to an internal SMTP server which then relays onto authenticated SMTP?

I have a back-end system which only supports sending email to an *UN*authenticated SMTP server, however, ultimately it needs to go via an authenticated SMTP server on the public internet. My idea was ...
2
votes
2answers
108 views

MTA handling of too large emails

If an MTA receives an email that exceeds the message size limit, which bevaviour is preferred? What is the default for common mail servers? Reject the email during the SMTP session. The delivering ...
0
votes
1answer
109 views

How does domain name resolution work for SMTP relay services?

Having problems with the default e-mail provided by a shared host (blacklisting and quotas), so I'm looking into SMTP services to handle outbound mail instead. However, one thing that I haven't been ...
0
votes
2answers
104 views

SMTP server to smtp server forwarding?

we have one smtp server and we want incoming mail should store by smtp and forward two other smtp server is their any solution we dont want email forwarding Ex mail@mail.com to amail@mail.com ...
0
votes
1answer
604 views

Google Apps + Mailgun Split Delivery

We currently use Google Apps for receiving emails on our domain. We would like to send all mail to unknown addresses to our Mailgun server for further processing. This seems like a typical "split ...
0
votes
1answer
191 views

RAID Card Event Notifications Email to Gmail

I need to get email for event notifications from our RocketRaid 2782. The problem is I don't see a way to get it to send mail to our google apps gmail account. I don't think the card offers ...
2
votes
1answer
114 views

Postfix as a relay for specific networks only

I have a strange issue with postfix that is driving me a little up the wall as it seems to work 50% of the time but with no changes made. What I want to achieve: I have a number of virtual servers ...
0
votes
1answer
160 views

Postfix: Ignore relay host when from specific address

I configured my postfix server to relay all received mails to smtp.example.com with relayhost. This server doesn't accept mails from an external source. So only scripts are sending mails. Is it ...
3
votes
1answer
293 views

Creating a “fake” open relay to capture non-relayable outgoing mail with postfix

We occasionally have customer-provided servers in our technical support and engineering departments. They're isolated on their own VLAN, with strict firewall rules in place to minimize possible bad ...
0
votes
1answer
967 views

Cannot send email outside of network using Postfix

I've set up an Ubuntu server with Request Tracker following this guide (the section about inbound mail would be relevant). However, while I'm able to send mail to other users within the ...
0
votes
1answer
282 views

How does “sendmail” send mails to any domain name?

I noticed that one of our servers (running Ubuntu) can send mails to any domain (yahoo.com ,gmail.com) using simple "sendmail" command. But I cannot figure out how to configure similar setup in a new ...
1
vote
1answer
241 views

smtp relay only works on gmail accounts

I have a client who has a server but does not host their own email. They have just purchased a MFC and want to scan-to-email. I have them set up to send mail to gmail, however if they try to send to ...
0
votes
1answer
341 views

Mail forwarding to external domain - BT, Exchange 2010

Thanks in advance for any help, this is not a basic mail forwarding question there is in fact a twist. We are trying to forward mail from an address at our domain john.example@ourdomain.com to ...
1
vote
1answer
291 views

Windows SMTP Relay Server to add BCC to all emails

I'm looking for a Windows based SMTP Relay Server which allows me to add a specific BCC field to all outgoing emails that relayed through this server. The reason for such requirement is that we need ...
1
vote
2answers
1k views

Problems sending email using .Net's SmtpClient

I've been looking through questions on Stackoverflow and Serverfault but haven't found the same problem mentioned - though that may be because I just don't know enough about how email works to ...
-1
votes
2answers
1k views

Same domain only : smtp; 5.1.0 - Unknown address error 530-'SMTP authentication is required [closed]

I have a very strange problem after moving my netwave.be domain from WebHost4Life to Arvixe. I configured several email adresses, like steven@netwave.be and sandra@netwave.be. For POP3 I can use ...
0
votes
1answer
85 views

Want to store To,From,Bounce,and mailstatus in sql database?

On my postfix relay server i want that postfix do not create /var/log/maillog file and directly store To, From,Bounce Address and mail status directely in sql server database. How can i do this ?
0
votes
2answers
141 views

SMTP server force outbound traffic

I'm having some trouble with setting up a SMTP server on a windows server 2003 machine, while trying to send emails using PHP through the internet, but to domain email addresses. Common info: I'm a ...
-1
votes
1answer
328 views

Postfix “Relay access deined” error with Outlook

I am following this tutorial and finished the basic setup. I can login and send via squirrel mail and telnet but receive a "relay access denied" error in the logs when i try and send from Outlook. all ...
1
vote
1answer
263 views

Is there any risk to sending emails to accounts that no longer exist?

As mentioned in a previous question of mine, I send a lot of emails. I have calculated that approximately 2% of them are coming back to me immediately with the general text reading: 550-5.1.1 The ...
0
votes
1answer
194 views

Is there are postfix setting to disable prepending a sender path in the Received: header?

Currenty emails are sent/received as : Received: from localhost.localdomain (sender.host [xx.xx.xx.xx]) by smtp.host (Postfix) with ESMTP id 7F6CC67897 for <mail@example.com>; Thu, 19 ...
0
votes
1answer
363 views

relay mail from one postfix server to another

I'm attempting to use just 1 postfix instance to input ALL my outgoing mail. From there the goal is to relay it to my one of the many outbound postfix instances. I do this using round robin dns so it ...
2
votes
3answers
3k views

How to get Postfix to send/forward/relay to a sub-domain located on another server?

I have a quick question. How do I setup postfix to send an email to another server (Exchange Server) when sending to an email address that has a sub-domain of our main server. For example, say our ...
-6
votes
1answer
510 views

What is the proper time delay between sending emails for smtp to not fail on windows server 2008 r2 [closed]

What is the proper time delay between sending emails for SMTP to not fail on Windows Server 2008 R2 machines? For example, if I set a 500ms delay, would it successfully send all emails? My software ...
1
vote
1answer
519 views

Exchange 2007 relay from sendmail, message “Undelivered”. Possible reasons?

Note: This is my re-post from Stackoverflow. I've been messing with a test environment for security purposes where a DMZ RHEL5 sendmail server is used as a relay for an Exchange 2007 server. ...
0
votes
2answers
412 views

How to send email from non-TLS enabled client through TLS-only Gmail account

I need to be able to send email from a client (an OKI document scanner) which is non-TLS capable. But my company's email service is provided by Gmail-Google Apps, which is configured to force TLS ...
1
vote
1answer
450 views

Need help diagnosing “User unknown in virtual alias table”

I'm using virtual alias maps to relay mail and I keep having some of the entries bounce. Postfix seems to know where they are supposed to go and when I run postmap -q for virtual_alias_maps and ...
0
votes
1answer
160 views

Use sendmail as client for relaying mail

I'm trying to use an account on my central mail server to send all mails from other boxes. My central mailserver is itracknetworks.ca and I have an account there at testuser@itracknetworks.ca. I ...
1
vote
3answers
213 views

Network Hardware supports SMTP, but no AUTH information… Need to Send emails through SMTP with AUTH

I have a network device that supports sending email notifications, but doesn't provide for the username and password. I would like to point this device to an internal system which would then take care ...
0
votes
1answer
1k views

Postfix: 5.7.1 Relay access denied

I hope I can become help here with my problem. I can't send E-Mails. I get only the error message: 5.7.1 Relay access denied my postconf: append_dot_mydomain = no biff = no ...
1
vote
2answers
185 views

SMTP Relay to capture attachments

Does anyone know of FOSS solutions (or general information) on setting up a Linux-bases SMTP mail relay that can do the following: Detect if a message has an attachment if so, save the attachment to ...
1
vote
1answer
654 views

Sendmail: Have to add NAT IP to access list to relay, why?

I have sendmail set up with smarthost to Google Apps (using AuthInfo in /etc/mail/access for authentication). I noticed last night that e-mail was not going through. I send an e-mail like so: echo ...
2
votes
2answers
104 views

Does a receiving mail server (the ultimate destination) see emails delivered directly to it vs. to an external relay which then forwards them to it?

Let's say my users have accounts on some mail server mail.example.com. I currently have my mx record set to mail.example.com and all is good. Now let's say I want to have mails initially delivered ...
0
votes
3answers
2k views

How do I secure smtp in exchange?

We currently run windows server 2003 with exchange mail, but have been blocked with spamhaus.org even though we don't send out spam mail. My question is, what settings do I need to set with smtp to ...
1
vote
3answers
6k views

Sending mail from Postfix via Gmail: unable to get local issuer certificate, certificate not trusted, No worthy mechs found

System specs CentOS 5.5 Postfix 2.3.3 Scenario I've been following Configure Postfix to send/relay emails Gmail (smtp.gmail.com) via port 587 to try and get the connection between Postfix and ...
0
votes
2answers
97 views

Postfix attempting all delivery virtually

We have Postfix configured for virtual domains and virtual mailboxes and it's running quite nicely. However, Postfix now thinks that everything except my_destination should be delivered virtually. ...
0
votes
2answers
449 views

SMTP Relay to Multiple Hosts

I have a situation where I need to configure an MTA to relay messages for a single domain (@example.com) to multiple (3) seperate SMTP servers. Email for user@example.com received on SMTP-1 needs to ...
1
vote
2answers
2k views

Recommended MTA for Windows Server

I need an mail server running on my web server that will just route email through other email servers. Exchange requires Active Directories which just complicates an otherwise simple setup. What are ...
0
votes
1answer
431 views

Configure mail server to relay through another mail server

I'm a developer and I'm currently building a hosted ecommerce solution. One thing the software must do is email customers on behalf of the vendor. However, one of the business requirements is that ...
1
vote
1answer
284 views

Can anyone explain what are the inbound and outbound relay in the mail server?

Can anyone explain what are the inbound and outbound relay in the mail server?
1
vote
2answers
558 views

“Relay access denied” overflowing postfix mail.log

My mail.log is overflowing with random spammers attempting to send spam through my server. Is this typical or have I misconfigured something? Is there a way to ban an IP after several attempts of ...
3
votes
4answers
4k views

SMTP relay through GMail overrides “from:” address with “[me]@gmail.com”

I've been trying to figure out if this is a new "feature" or if there is an issue with my configuration. I'm using Ubuntu 10.04 Desktop with Postfix as MTA. My smtp (as opposed to smtpd) ...