Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [email-server]

Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.

Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.

A list of mail servers can be found on Wikipedia, though sendmail, Microsoft Exchange Server, Postfix, and Exim are the most popular email servers, which together control over 85% of market share for SMTP service.

3094 questions
14
votes
15 answers

How to determine a reasonable attachment size limit?

I'll confess this is an area where I'll give it 10-20mb and toss out an "email is not intended for file transfer" whenever a user gripes about having to use FTP. But a shiny new mail server deserves a rational approach... so what is a non-voodoo…
Kara Marfia
  • 7,892
9
votes
1 answer

Is Dovecot required for mail server like Exim or Postfix?

I am really confused about this, because I thought Exim and Postfix can authenticate user logins and nothing is required. Reading the page at https://www.digitalocean.com/community/tutorials/how-to-install-and-setup-postfix-on-ubuntu-12-04 It…
user702300
  • 267
6
votes
2 answers

Verifying MTA for correct behavior with swaks

I'm looking for some advice, what I should to check at my brand new mail-server for it's correct behavior. /saying behavior, because it is working - just but want be sure than it is working correctly./ I don't want get blacklisted only because, for…
kobame
  • 257
5
votes
1 answer

Maillog help - ' removed '

I'm seeing some strange behavior from the maillog while tailing it and I'm wondering how to know if it a hack, whereby bad emailers (spammers) use legitimate mail servers behind the scenes to send their spam. This will obviously end up getting the…
landed
  • 153
3
votes
3 answers

Best Open Source Mail Server for Windows

I'm looking for a mail transfer agent that is free, preferably open source that can run on Windows natively. I've used Postfix before, but Postfix doesn't really run on non-Unix machine.
Emmanuel
  • 133
3
votes
2 answers

Hosting email and supporting client auto configuration

Is there a best way to provide email hosting such that email clients like Outlook and Mac Mail can automatically configure themselves given limited information (email + password)? I'm guessing it might have to do with DNS entries - using…
William Jens
  • 191
3
votes
1 answer

Hide Email address?

I recently got a request from my boss, essentially he needs this: Clients will send email to a general@example.com, a. Dispatch emails from clients to agents according to some rule, like: Forward emails from joe@gmail.com to…
xbtsw
  • 133
3
votes
2 answers

Whats the different between mail servers? MTA and pop3/imap?

What is the major difference between the various mail servers? What is MTA? Is it when you are just reading directly from the mail server as oppose to a pop3 or imap3 connection? I guess if someone could go over the various mail server types that…
Blankman
  • 2,901
2
votes
1 answer

Working email server suddenly broken

Alright, so the background on this server is: I installed postfix/dovecot/spamassassin/opendkim on an Ubuntu 14.04 server running on AWS. After a bit of pulling my hair out, everything worked. Why, oh why, I didn't just leave the damn thing alone --…
Aurelius
  • 343
  • 3
  • 15
2
votes
2 answers

How to check if mail server PTR is correctly configured?

As mentioned here, mail server Reverse-DNS (PTR record) must configured well. most offen the FQDN is not in own control and it is defined by the ISP provider. and it never equals with mail server domain name. Requesting the ISP to change it, is not…
wtayyeb
  • 174
2
votes
4 answers

Are there any good free mail server software available?

I'm trying to setup a mail server, are there any good open source software available for this for Windows or Linux?
Elitmiar
  • 785
2
votes
1 answer

Move email hosting with no bounces?

Our web site and email is currently hosted by a shared hosting service. We'll be moving both of those to a VPS soon, and I'd like to make sure that we experience as few delays as possible, and no lost email while we do so. I'm a developer playing…
Colen
  • 497
2
votes
3 answers

Easy to use mail server

We are looking for a relatively simple mail server. We have two requirements: Incoming mail can be piped to an arbitrary executable (binary or script) Users with valid passwords can easily use the server as an outbound relay. (Preferable) Easy…
yakatz
  • 1,243
2
votes
2 answers

Error 550 Mail Relay Message Could Not Be Sent

I'm not sure if this is the right area to ask, but here we go. I have a client who has a couple websites on a Windows server with MailEnable as the mail manager. Any emails being sent from the server work great, except when sending to some domains,…
mraliks
  • 121
2
votes
1 answer

How To Stop & Prevent "Email Spoofing"?

Currently my server running on Windows 2003 with MERAK(IceWarp) Email Exchange install. Email Spoofing happen across entire email domain network. How can I stop & prevent email spoofing happen?
Simon
  • 51
1
2 3 4