SMTP is the Simple Mail Transfer Protocol, the most recent standard of which is defined in RFC 5321. It's the Internet standard for sending and receiving email.

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Does it matter if your web server's IP is RBL'ed?

We have a web server (on Slicehost) with an IP address that has been blacklisted in at least one DNSRBL (FIVETEN). The host is not currently a source of mail, in fact all mail for the domain goes ...
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1answer
862 views

Postfix sasl relay host

I'm trying to set up SASL to a relayhost to send external email. I've read a hell of a lot and done everything I'm supposed to have done. However our provider won't accept me relaying emails with (we ...
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1answer
375 views

How to configure MailEssentials to not filter authenticated SMTP sessions

Were using GFI MailEssentials on Exchange 2003. We have some remote users using IMAP/SMTP (due to limitations of their mail client). We use SSL on IMAP and TLS on SMTP. To send mail, these clients use ...
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2answers
905 views

How to configure Exchange to forward mail to backup SMTP server via IP

In the company we are using an unix server for emails at the moment. We are switching over to Microsoft Exchange Server. How can I configure it to send a copy of each message posted into my inbox to ...
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2answers
890 views

SMTP Remote Queue on Exchange 2003

We are currently using Windows Server 2003 R2 with Exchange 2003 and SolarWinds Exchange Monitor to monitor. A couple of weeks ago the SMTP remote queue began to build up and it got to about 150 ...
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1answer
3k views

Sendmail - Relaying denied (state 14)

I have my sendmail.cf file configured to send local mail and to receive external mail to local users. So sending mail from the server to the external world works fine, but the other way around does ...
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2answers
2k views

Mail server Mac OS X Snow leopard

I have a problem, I can't find at good tutorial how to setup my mail server. I only can get a user account with the "shortname" and my server's ip, address like nickname@10.0.1.100 :/ I need to bind ...
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2answers
541 views

Installing and Configuring Windows 2008 SMTP Server

Trying to work out the process of enabling SMTP server on a Windows 2008 Server. I've enabled the SMTP feature within the Server Manager but I don't see where to configure it. I need to be able to ...
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2answers
11k views

sendmail SMTP relay on Solaris server?

how to check whether sendmail option is configured for smtp relay in solaris server
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1answer
454 views

SMTP Verb Error on MSExchange Server 2003

Every morning for the last two weeks or more I've had to reboot our Exchange Server and often I have to reboot it again during the day. We use a smarthost for sending our mail out and if I view the ...
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3answers
2k views

Exchange 2007: can I configure a different SMTP send connector per user?

I want to configure a separate SMTP send connector per user. Is this possible? Thanks.
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1answer
394 views

How to send 500 emails from a local pc? [closed]

I want to send an email to 500 recipients but I don't want to use any gmail, hotmail, yahoo etc. as they impose several restrictions. Someone told me to install a SMTP server on your local pc and an ...
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1answer
245 views

exim4 nonstandard ports

Asked this on StackOverflow (http://stackoverflow.com/questions/1655281/exim4-nonstandard-ports) but someone pointed out it belongs here. I am trying to use exim4 on debian to relay mail, nothing ...
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3answers
862 views

Smtp server on localhost

I have installed a SMTP server on my localhost. Now I want to give host address of that SMTP server to my mail client so that client can send emails to that SMTP server on the same computer. I have ...
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2answers
1k views

Postfix: multiple relayhost for 2 internet lines?

Following setup is going on: Firewall with 2 internet lines. Postfix is running as MTA. I have 2 ip's on the lan, 192.168.2.254 & 192.168.2.252 I would like to create the following situation: ...
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2answers
172 views

Is it advisable to use Google Apps Email for application to user communication?

I'm generally sick of managing my own e-mail server, but there are some applications I'm working on that will be needing to communicate with 3rd party users over e-mail. For things such as ...
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1answer
654 views

Secure SMTP server on windows webserver 2008

I managed to install the SMTP server on my windows webserver 2008 in order to send emails from PHP or .NET apps running on the server. Everything works fine, but now I am concerned about security. ...
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2answers
4k views

Mac OS X Server (10.5) mail trapped in queue

We've got mail accumulating in our Leopard Server's queue and not sure exactly why. This machine has required little maintenance over the years so I'm hoping someone here spot the obvious and save us ...
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4answers
5k views

What's the best SMTP provider? [closed]

I'm considering using an SMTP service to send mail for my web app. Google Apps is great and free, but limits to 500 outgoing per day. I've heard about AuthSMTP but it looks pricey. Any suggestions? ...
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3answers
6k views

sendmail relay status

I have a RHEL3 server with sendmail configured to relay mail to: # "Smart" relay host (may be null) DSmailrelay This relay server is an exchange server not administered by me. A few days ago its IP ...
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1answer
1k views

SQL Server 2008 - SQL Mail and sender addres

is there possibility to have procedure which sents emails from SQL Server 2008 where I can type sender e-mail address? Thanks
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2answers
5k views

Where are the SMTP settings saved in IIS7/Win2008?

I have a problem getting SMTP to work with an ASP.NET app I have (the error I get is "Cannot get IIS pickup directory"). The app delivers the mail to SMTP using the pickup directory. I already know ...
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1answer
883 views

IIS Mail from Pickup directory not going into Badmail folder

I have been testing my SMTP setup on IIS6 today. I have created a test.eml file that I palce in my pickup directory and it gets sent out. However, when I put a bad address into the file it is not ...
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4answers
2k views

Failure to send email to a specific domain

I am currently experiencing an issue sending email to one specific domain. We are running Exchange 2007 (recently migrated from 2003). We are able to successfully send email both internally and ...
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5answers
4k views

Install SMTP Service on Windows 2003 SP2 without Installation CD?

I need to modify my development environment, a virtual image using Windows 2003 SP2, to install the SMTP service under IIS (6.0). The virtual image is a corporate build, and I do not have access to ...
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1answer
2k views

How to ask exim4 to redirect some email pattern to a specific email address?

I would like to redirect all email from *@domain.fr to username@gmail.com Do you know how I can configure my exim4 server on Debian to do so ? (My exim configuration seams to be split in different ...
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4answers
3k views

SSMTP with Gmail (Google Apps) [closed]

I want to set up my raid server here at home to use gmail's smtp and an email from my google apps to alert me if there is any issues. I set up ssmtp, here is my config: # Config file for sSMTP ...
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1answer
237 views

IIS SMTP service does not accept mail addresses with non-ascii domain name

our IIS6 is running a smtp service. This smpt throws the following exception if an email shall be send to an domain with an umlaut. Exaple: mymail at mydomäne.de etc. Doesn't the IIS support such ...
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2answers
2k views

sendmail can not relay from itself

I am running 3 centos 5.2 servers and I have configured the server for forward all messages to root to be emailed to me via .forward rule. This is working fine on two of the servers but not on the ...
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2answers
1k views

Strange delay sending email via SMTP on Exchange 2003

When I try to send email through Exchange 2003 via an SMTP connection, I get a strange delay after specifying the recipient. Here is a telnet log, with a redacted domain name: (telnet mail.xxx.com ...
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2answers
955 views

Free light OUTBOUND SMTP program for Windows servers?

anyone know of any free SMTP outbound only servers / service for a windows server 2008 machine? I've got some web pages that send out emails (around 300 a day). I don't want any inbound stuff / mail ...
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2answers
10k views

IIS SMTP: 550 5.7.1 Unable to relay

I am trying to configure IIS 6 SMTP server for outbound mail. I did the following telnet test from Wikipedia and getting error highlighted in bold below. 220 smtp.example.com Microsoft ESMTP MAIL ...
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2answers
2k views

qmail-smtpd TCP file in CentOS with “Parallels Plesk”

Related to this questions answer: I have found the /var/qmail/users/cdb file on my installation, but can't find the qmail-smtpd/tcp file or the tcprules command to create or modify the cdb. I was ...
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3answers
705 views

Win Server 2K8 - Setting up SMTP Server

I'm setting up an SMTP server behind NAT. I'm a bit confused about the DNS requirements as I thought I could just setup the SMTP server and allow connections from the internal IP address on the ...
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7answers
5k views

Postfix open relay

Greetings, Google says that I'm originating too many emails from my IP. Since I NEVER uses this smtp to originate emails, I suspect my postfix is somewhat misconfigured, so that I have an open relay ...
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1answer
207 views

Auto CC on outbound SMTP mail

Is there a way to have IIS SMTP mail server automatically CC all mail it sends to a fixed email address? Now, when Chilkat mail sends messages via SMTP, there is no record of the sent messages. We ...
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3answers
1k views

Slow smtp-server at GoDaddy for VPS - alternatives?

A client runs a VPS at GoDaddy, and they tell us to use k2smtpout.secureserver.net for our web-apps. But it usually takes 10-15 minutes to send an email, which is totally unacceptable. Is anybody ...
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1answer
992 views

IIS's SMTP Pickup timing

I have IIS's SMTP server set up as a closed relay, and it's working nicely. I also have an application that writes EML files. If the EML files are written to a temporary directory, then moved to the ...
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2answers
1k views

How to setup external mail addresses without external autodiscover tries?

We have a little Exchange/Outlook installation here that fetches the mails from our provider with POP3. Now to be able to send emails outside our organisation, I added another SMTP address to the ...
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6answers
552 views

ISP blocking port 25

My ISP has started blocking port 25 so I can not send email through my dedicated server any more. I have several options: Send email through the SMTP server provided by my ISP. Any problems with ...
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1answer
4k views

pfSense port forwarding email blocks some senders

We're using a pfSense firewall with a static public IP. TCP port 25 is forwarded to the mail server on the DMZ, according exactly to the directions here. This works great for most senders, and email ...
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votes
5answers
25k views

mail loops back to myself | postfix

Hi I have an issue with bounced mail it does not happen all the time but at the same time is very frequent. Most of the time if I send an email to an address that does not exist then i get a bounce ...
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3answers
497 views

Alternative SMTP-Proxy

Currently we are using bitdefender for mail servers to scan for spam, viruses and content filtering. We chose bitdefender as it receives all incoming emails and forwards them to our internal windows ...
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3answers
4k views

Postfix configuration - Uing virtual min but server is bouncing back my mail

I have no experience in setting up postfix, and thought virtualmin minght do the legwork for me. Appears not. When I try to send mail to the domain (either abuse@xxxxxxxxxx.com domain@xxxxxxxxxxxx.com ...
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1answer
1k views

Exchange 2007 - Forward outbound mail to external SMTP server?

How do I configure Exchange Server 2007 to send outbound email thru an external SMTP server?
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2answers
1k views

Emails returned by hotmail

Some emails I send (from php) are returned by hotmail with this message: <xxxxxxx@hotmail.com>: User and password not set, continuing without authentication. 65.55.92.136 does not like ...
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1answer
477 views

How can I strip EC2 domain info from email headers?

I run a web application on Amazon EC2 and, because of the shortcomings with AWS and reverse DNS, I direct email to a dedicated SMTP server running Postfix at a different provider. Unfortunately the ...
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2answers
1k views

Server hacked for SPAM, The BAT in X-Mailer

Our server has been hacked and I am trying to track down the cause. The server is being for SPAM purposes and it looks like IIS is being using to send the emails as the badmail and queue folder are ...
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1answer
3k views

What is a good SMTP server for testing email system on Windows [closed]

I need a simple "fake" SMTP server or decent real SMTP server than can be configured to just dump all the mail it receives. I've tried Dumpster and it does nothing but error out on me. (I'm not much ...
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2answers
3k views

How can I configure the IIS SMTP service to store *all* emails (regardless of domain) in the drop folder?

How can I configure the IIS SMTP service to store all emails (regardless of domain) in the drop folder? I'm trying to catch all emails sent to an SMTP server during testing. I don't want to relay the ...