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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Postfix smtp mail loging

Google fails me... Is there a way without modifying Postfix code to get copies of emails sent via smtpd server? Anything will do - text file, pipe, local socket. I just need Postfix giving me time, ...
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1answer
1k views

Problem sending mail “Client host rejected: Sorry, no xDSL here”

I'm trying to use SMTP on localhost to send emails thru a simple mailform in asp.net c#. For some reason all emails end up on the badmail folder. The .BAD file says: Final-Recipient: ...
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3answers
257 views

SMTP server to edit email content on the fly

I am looking for an open-source / free SMTP server that will enable me to automatically change the content of outbound messages via a simple search & replace (or regular expression). It should be ...
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2answers
21k views

Easiest way to configure local SMTP server to relay through gmail on Windows?

We have gmail for our corporate email provider. I want to be able to send mail through smtp.gmail.com from ASP.NET. I have managed to do this just fine - and it has the benefit of all sent items ...
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2answers
2k views

Postfix relay with Exchange Server

Is it possible (or even logical) to use Postfix as relay MTA with Microsoft Exchange Server 2007, and if so how?
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1answer
2k views

Sending Email by SMTP IIS7 Server on Windows Server 2008

I have a website that sends out email The C# code to do this is: var mailClient = new SmtpClient { DeliveryMethod ...
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2answers
2k views

Exim send failure “421 SMTP incoming data timeout” - Message body lacks '\n' at the end

I'm trying to figure out how this issue is occurring and how to stop it. Somehow messages are getting into our inbound Exim spool without any \n at the end. When our outbound Exim process tries to ...
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2answers
2k views

How to avoid mails going to SPAM (Configuring SMTP Server on IIS)

How to configure SMTP Server in IIS such that the mails sent from my Server doesn't go to the spam box of gmail, yahoo, or hotmail ?
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160 views

How can I add a domain to an IIS 6 SMTP server so that it will relay for that domain?

How can I add a domain to an IIS 6 SMTP server so that it will relay for that domain? eg. If I have an email (from address: test@test.com) coming over the net from a server with IP address 1.2.3.4 ...
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1answer
257 views

Mail sending error in VBA form

: I am getting the following error The host 'smtp' could not be found. Please verify that you have entered the server name correctly. Account: 'pop3', Server: 'smtp', Protocol: SMTP, Port: 25, ...
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3answers
747 views

Postfix mailq - send every x minutes

I got about 2000 clients on my website that have subscribed to our mailing list. I've used in the past Swift Mailer but it didn't work the way it was supposed to. I'm wondering if there is a way that ...
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2answers
852 views

Intercepting SMTP traffic

I'm looking for a way to intercept outgoing SMTP messages from a few users on my network. Sadly I'm dependent on an e-mail provider and can't set up my own e-mail server.
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1answer
639 views

I want Lotus Domino to only send one email to users that are both recipients and members of a cc'ed lotus group

Lotus Domino 7 and now Lotus Domino 8.5 The scenario: A@mycompany writes an email to b@internet and cc's it to group@mycompany. A@mycompany is a member of group@mycompany. With the initial email ...
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1answer
382 views

Exchange Server 2007 Transport Errors — SMTP Session Hangs

I was doing some changes to the server (writing an Transport Agent). After trying to install it, I started to get some errors. Now, when connecting to the SMTP server the session hangs just after ...
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1answer
136 views

SMTP server setup on windows xp, IIS

I have my domain registered with godaddy. I want to send newsletter to my customers (around 5000). But there is limit to send number of emails per day. Can i setup SMTP server on my home PC ...
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2answers
644 views

How do I secure my mail server?

How can I secure my SMTP port from being telnetted by external IPs?
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2answers
390 views

SMTP server on Win2008, SPF ecc

I want be able to send outgoing email from my website. I want to setup Win2008 smtp to be able to send them respecting all the spam rules. My checklist is: the smtp should be able to accept ...
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3answers
185 views

Exchange 2007 - One server set-up

I'm trying to set up Exchange 2007 with just one server (not the Transport + Hub configuration, just a Hub). I installed the server with the Hub Role, and it's not accepting SMTP. I changed SMTP so ...
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5answers
6k views

How important are PTR records for Email Servers?

Does anyone know of any studies done to show how much email will be rejected if there is not ptr record for the SMTP banner name of an email server? Are reverse checks always done when enabled, or ...
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1answer
502 views

How can I rewrite the FROM header and Body of an Email sent through IIS SMTP?

Don't know a ton about windows. I have a interesting problem. We have a 2003 server on amazon ec2 that houses a special 3rd party app. This app sends emails back to a support email address but it ...
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4answers
1k views

Problem with Outlook sending HELO / EHLO

i'm having a very strange problem - there's a client running outlook 2003 with 2 email accounts. they're configured exactly the same (except username/password), they both have "authentication-on-send" ...
6
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1answer
24k views

How to configure sendmail to send email via GMail (smtp.gmail.com), using port 465 or 587?

I have configures sendmail to send email via my GMail (Google Mail) account, i.e. via smtp.gmail.com, by editing /etc/mail/sendmail.mc and regenerating sendmail.cf: -dnl ...
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2answers
450 views

Drop mail to same domain via different relay

OK, this is a slightly convoluted question. I have a machine here that collects all our mail from an upstream provider with fetchmail, and stores it in our office for collection via IMAP4. We also ...
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1answer
157 views

IIS 6 / Server 2003: Creating Subdomain for Mailserver

What's the easiest way to create a subdomain for the mailserver (eg. mail.mydomain.com) and connect it to the mailserver? It should be possible when adding new domains that there's the mail-subdomain ...
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3answers
621 views

POP, SMTP and Mail Exchange servers are the same thing?

The MX record from nslookup tells the address of an MX server. In the email client, this address can actually be entered on both [incoming email server] and [outgoing email server], will this work?
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1answer
256 views

How sending email works?

when a user sends an email.. what is the procedures that is happening? i mean how the servers is distinguishing between @gmail.com and http://gmail.com for example? are there special ...
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2answers
5k views

Configuring Exchange to relay internal e-mails to an SMTP server

I am working on a SharePoint implementation for a group within an international company. SharePoint has the ability to retrieve e-mails from an SMTP Drop Folder. I have installed the SMTP service on ...
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2answers
2k views

Troubleshooting 5.5.0 smtp; 503 Bad sequence of commands (Microsoft SMTP + Exchange 2003)

Note: this question has changed. Originally I believed it had something to do with BDAT. An external party is trying to send us a message to a valid address and they're getting an NDR: ...
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2answers
619 views

Name resolution works from desktop but not Server

Sending mail via smtp.gmail.com is failing on my server. I looked on some forums and people were saying to make sure you can telnet to the smtp address first. When I telnet from my server i input ...
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3answers
4k views

UNIX: Send Mail using SMTP Server

I would like to send an email through a remote SMTP server. How can this be done? I will be sending the email from a bash shell script. I'm using a unix machine. uname -a returns: Linux linux 2.4.21 ...
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1answer
362 views

IIS SMTP Server

I am trying to set up an SMTP server on a virtual private server. I have typically hosted applications with hosting companies in the past. I am using SMTP on a website to send mail but need to ...
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0answers
673 views

Postfix sasl relay host - weird behaviour

Previously I had a relayhost set in postfix to mailhost.zen.co.uk - I don't think it accepts SASL - only TLS. So I though I would try changing to a different relay host. However, the following log ...
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1answer
974 views

Postfix sasl relay host - failure

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
289 views

SMTP Connector Settings

I’m looking for info on setting up an SMTP connector to accept all mail sent to the server (MX20) for a domain, hold it and forward it onto the primary Exchange server (MX10).
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4answers
309 views

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
854 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
357 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
902 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
887 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
2k 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
447 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
861 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 ...