All Questions
956
questions
0
votes
0
answers
15
views
send email using multiple domain emails using main domain postfix smtp server
I have a domain with postfix for SMTP server, eg EM-NAME.DOMAINNAME.COM
We are sending emails in bulk from domain email [email protected]
I am trying to send emails on behalf of my ...
1
vote
1
answer
40
views
Postfix connection timeout to all servers
I have Postfix on an Ubuntu server.
postconf mail_version
mail_version = 3.6.4
Every email i send to any recipient ( tried gmail , hotmail and yahoo ) , is stuck in the queue
(connect to alt2.aspmx.l....
- 11
1
vote
2
answers
120
views
How can I mitigate a flood of inbound emails that look legitimate to filters?
I have a mail server - postfix, amavis, dovecot. Currently one of my inboxes is being flooded with random email from all over the globe. It's like someone signed me up to 10,000 newsletters all at ...
- 125
0
votes
0
answers
31
views
Postfix replace in body by adding CR
I'm trying to configure Postfix body_checks function in order to add a CRLF when an end of attachment is detected using this:
/(.+)--$/ REPLACE $1--\r\n
The regex is correctly applied but the \r\n is ...
0
votes
0
answers
23
views
How to change the sender address using mailutils and postfix?
May 27 14:19:33 localhost postfix/qmgr[21793]: 87FD870AD12: from=user@localhost,
size=398, nrcpt=2 (queue active)
May 27 14:20:03 localhost postfix/smtp[22591]: connect to
mail.rungel.net[95.168.160....
0
votes
2
answers
300
views
554 5.7.1 Relay access denied - cant send mails
I tried to upgrade debian from 10 to 11 and the everything got messed up. Im trying to fix postfix. I can receive emails but cant send. I get the error "554 5.7.1 Relay access denied"
My ...
- 11
0
votes
0
answers
53
views
How to add your own private keys to postfix configuration for DKIM without opendkim or the likes of it?
I have generated the keys locally through openssl added key.pub to the DKIM DNS txt Record but how to add it to postfix withouth any other tool.Is there any connfiguration parameter where the file ...
0
votes
1
answer
214
views
SMTP Server: Postfix w/ Dovecot - how to configure the allowed username + password?
I seek a Linux-based SMTP server.
I've read tutorials and specs regarding Postfix SASL with Dovecot, though I can't find how to configure the list of username and password which are allowed to send ...
- 175
1
vote
0
answers
95
views
How can I make MIAB automatically copy all mail sent via SMTP into the sent folder of the sender's account?
I run Mail-In-A-Box on my mail server and one of my clients is using a specialized application to send messages via SMTP from their account on my server. When they used their own Gmail account to send ...
- 11
0
votes
3
answers
273
views
Postfix sending duplicate emails under different userid's, how to fix?
I can't find a reason for it in the postfix settings, but duplicate emails are being sent, under different uid's. Looking at the email headers, they have unique ids, and each with a different Postfix, ...
- 111
1
vote
1
answer
127
views
Postfix - can't limit active queue
One of the destinations I send email to has unusual performance characteristics. The active queue can fill up with messages for this domain, blocking sending to other domains. I want to limit the ...
- 23k
0
votes
0
answers
65
views
postfix MTA seemingly benign I/O Error : postqueue fatal: output write error: Input/output error
I am getting the following message in my syslog exactly every 30 seconds. Everything is working but words like "Fatal" and "Input/output error" cause me an inordinate amount of ...
- 21
0
votes
1
answer
53
views
How to send email from smtp server1 to smtp server2 (Postfix) via client?
How to make server1 with postfix can send email to server2 with postfix by redirecting DNS query to it (type forward). These servers are on the same local network. Server1 is to receive a non-...
- 1
0
votes
0
answers
118
views
Postfix/Dovecot fails to send emails "SASL PLAIN authentication failed" - no further message
I have been all around the houses trying to configure Postfix and Dovecot so I can send through my domain from Gmail, which as far as I know is simply Gmail acting as a regular SMTP client talking to ...
- 235
0
votes
2
answers
199
views
How to change the sender / from field using Postfix as SMTP relay server to relay to MSO365 mailbox
My company have set up an Ubuntu 22.04 Server to act as an SMTP relay server to relay messages to our Exchange online mail server.
A user account [email protected] has been setup on the Exchange to be ...
