MTA stands for Mail Transfer Agent. An MTA is a server-side program which accepts and transmits email messages on behalf of end users. Examples: sendmail, postfix, qmail.

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7answers
2k views

Should I run my own MTA?

I need to send a large volume of emails, roughly 60.000 per week. At the moment we outsource this service to a third party, and we expect to double our volume within the next 6 months. Since the ...
7
votes
1answer
14k views

“My unqualified host name (foo.bar) unknown” Problem

When trying to start sendmail or send a mail using a wordpress plugin, this error shows up in the maillog: "My unqualified host name (foo.bar) unknown; sleeping for retry" After Googling the best ...
8
votes
2answers
13k views

Is Postfix the same thing as Sendmail?

I have postfix setup on my server so that I can send outgoing mail using the command-line: mail -s "Subject" address@example.com Is this using sendmail or postfix? Is "sendmail" just a software ...
0
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1answer
392 views

Can't send emails through sendmail, error occured

I have sendmail MTA and I use pear:Mail class to send mails through remote sendmail server. Everything was fine till yesterday. Probably nothing changes was made in configs. At maillog I can see: ...
8
votes
3answers
2k views

Linux- Is an MTA required?

My VPS image (Debian 6) comes pre-installed with sendmail as the MTA. I will use this server as a web server, and maybe other usages but not as a mail server. I want to remove as many unneeded ...
2
votes
1answer
435 views

Logwatch without MTA/Postfix?

Is it possible to have Logwatch send daily emails without actually installing Postfix? I want to keep my server light and installing an MTA just because of Logwatch seems overkill. Or will I need ...
1
vote
1answer
504 views

Postfix limit number of emails send in a month/Day

Is it possible to limit the users to send total email in a month/day. I am trying to enforced marketing users to send newsletter according to their assigned quota. Example 1. user1@example.com: can ...
1
vote
2answers
735 views

Exim 4.69 denying outbound mail due to syntactically invalid EHLO (bizarre pseudo-MAC FQDN)

Since yesterday (new router, which I suspect is the root cause) a client's been having trouble sending email. Receiving is fine, just the outbound is constantly failing. Tailing Exim's mainlog, this ...
1
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1answer
178 views

HOWTO Catch/Redirect all outgoing e-mails from webapp on Windows Server 2003

As suggested by another member, I have split the original post into two. To see the original post, go to ...
0
votes
2answers
173 views

Which is the easiest to configure MTA/POP3/IMAP solution? [closed]

I'm having hard time to configure postfix/dovecot + mysql with virtual domains. Still doesn't work for me 100%. Which is the easiest to install/configure mail solution for centos 6/64bit ? I just ...
0
votes
3answers
1k views

Zimbra Alternative Open source application [closed]

I'm looking for an open source alternative for zimbra which supports outlook and thunderbird as pop and smtp clients. I don't need collaboration suite. If anyone can suggest or share their experience ...