Questions tagged [smtpd]
63 questions
30
votes
1 answer
What's the difference between postfix/smtp and postfix/smtpd
A bit confused when reading through the logs of my smtp/mail server, I'm turning this questions to you guys.
In the maillog files I'm seeing entries for postfix/smtp as well as postfix/smtpd. I can also see that there are possible settings for smtp…
Edwin Krause
- 437
- 1
- 4
- 6
8
votes
4 answers
Receive emails on Amazon EC2 Server
I just got started with an EC2 instance and got my mail sending limit removed, allowing me to send emails from my instance. But due to lack of experience, I have no clue on how to enable receiving emails sent to me on that server.
The instance has…
Kartik
- 191
- 1
- 4
4
votes
1 answer
Postfix: Set custom SMTP Banner based on address used to access server
The Postfix parameter smtpd_banner sets the text of a server's SMTP greeting banner. The default setting is:
smtpd_banner = $myhostname ESMTP $mail_name
My mail server has several unique IP addresses assigned to it, one per domain for which it…
user101340
4
votes
1 answer
Limit concurrent connections to Postfix server
I'm having trouble limiting the number of concurrent connections from the same client to my Postfix server. Limiting the maximal number of concurrent processes, from the same or different clients, is done easily.
Here are the two parameters that I'm…
Jay
- 141
- 1
- 1
- 2
4
votes
1 answer
unable to open Berkeley db /etc/sasldb2: No such file or directory
In /var/log/mail.log I get such error message:
Jul 25 01:33:11 ubuntu8 postfix/smtpd[10863]: warning: SASL authentication problem: unable to open Berkeley db /etc/sasldb2: No such file or directory
But the database is here:
# ls -l…
alex2k8
- 175
- 1
- 4
- 9
4
votes
1 answer
reject: RCPT from unknown[]: 450 4.7.1 Client host rejected: cannot find your reverse hostname
Sending an email from my local network is going fine. Also through Thunderbird or remote with Roundcube, which is locally installed.
But now, I am in Asia and try to send an email with Thunderbird.
The following error is in the…
Zilvermeeuw
- 61
- 6
3
votes
1 answer
Postfix: How to limit outgoing messages (smtp) while sender_dependent_default_transport_maps is enabled?
I would appreciate and thankful if anybody could suggest me regarding the following issue I am dealing with for the last 7 days.
Current Condition:
1 working mail server (collocation) that host for 5 domain names (no, we are not a hosting company,…
busythomas
- 71
- 2
- 9
3
votes
1 answer
postfix/submission/smtpd[xxxxx]: warning: hostname <**> does not resolve to address : Name or service not known
I installed iRedMail on VPS (Ubuntu). Fail2Ban bans my home IP address.
In /var/log/mail.log I see messages like:
postfix/submission/smtpd[32149]: warning: hostname unallocated.sta.lan.ua does not resolve to address 31.43.102.*: Name or service not…
TitanFighter
- 135
- 1
- 7
3
votes
1 answer
What's the proper way to get smtpd (OpenSMTPD) to pick up changes to smtpd.conf?
I'm new to OpenBSD and in the process of learning OpenSMTPD. I would have expected some sort of "restart" option from the smtpctl command, but it only has a stop with no start which might force a reread of smtpd.conf so changes take effect. Outside…
rcampbell
- 1,025
- 4
- 14
- 24
3
votes
1 answer
550 Recipient address rejected: User unknown (in reply to RCPT TO command) - for an external domain
In postfix, I'm unable to receive mails from the specific domain but I'm able to send mails to it.
For some reason postfix thinks the domain is internal, correct me if I'm wrong?
Sample from postfix maillog:
Sep 17 18:45:52 smail1…
Eran
- 45
- 1
- 2
- 8
3
votes
1 answer
Avoiding non-existent domain point to my country's Network Information Center?
I have received an alerting email about the Mailqueue length from the Nagios:
Additional Info: WARN - Mailqueue length is 18 (More than threshold: 10)
In the mailq, I see some messages like this:
-Queue ID- --Size-- ----Arrival Time----…
quanta
- 50,327
- 19
- 152
- 213
3
votes
1 answer
Can I use DenyHosts for a SMTP service
I would like to block some hosts that are brute forcing my SMTP server.
I'm currently using DenyHosts for SSHD and was wondering if I can add the SMTP service too.
It could be possible based on this…
Derick Schoonbee
- 131
- 1
- 2
2
votes
1 answer
If I am using dovecot for submission, should I reject all emails sent through postfix?
I have configured dovecot submission service on port 587, with the relay being the postfix server. They are on two different ip addresses/machines.
The only way I want email to be sent, is through port 587, meaning dovecot will handle it and relay…
Christopher Thomas
- 169
- 11
2
votes
1 answer
OpenSMTPD wont work at reboot
I just installed an OpenSMTPD server on my arch linux machine. It is working fine when I start it myself, but is failing to start when I reboot the machine.
Here is the journalctl -f _SYSTEMD_UNIT=smtpd.service output:
-- Reboot --
Oct 05 15:14:29…
Niols
- 123
- 4
2
votes
2 answers
Where do these "single-dot" smtp connection failures come from?
I'm running a mailserver based on postfix. There are a lot of connection failures like this:
Transcript of session follows.
Out: 220 hostname.tld ESMTP Postfix
In: .
Out: 502 5.5.2 Error: command not recognized
In:
Out: 500 5.5.2 Error: bad…
McJoey
- 121
- 2