OUR SYSTEM HAS DETECTED THAT THIS MESSAGE DOES NOT MEET IPV6 [GMAIL]
Postfix
0
ISSUE
When an email is sent from the server to a Gmail account it fails to deliver.
The postfix is used as Mail Transfer Agent to deliver emails.
The postfix is used as Mail Transfer Agent to deliver emails.
SYMPTOMS
In the /var/log/maillog the following error appears
[root@dbpilot ~]# cat /var/log/maillog Apr 17 10:41:38 ns7000905 postfix/pickup[38640]: 16E1046B825C6: uid=0 from=Apr 17 10:41:38 ns7000905 postfix/cleanup[38650]: 16E1046B825C6: message-id=<20180417144138.16E1046B825C6@dbpilot.net> Apr 17 10:41:38 ns7000905 postfix/qmgr[38641]: 16E1046B825C6: from= , size=468, nrcpt=1 (queue active) Apr 17 10:41:38 ns7000905 postfix/smtp[38652]: 16E1046B825C6: to= , relay=gmail-smtp-in.l.google.com[2607:f8b0:400d:c08::1a]:25, delay=0.2, delays=0.01/0/0.08/0.11, dsn=5.7.1, status=bounced (host gmail-smtp-in.l.google.com[2607:f8b0:400d:c08::1a] said: 550-5.7.1 [2607:5300:60:cc8c::] Our system has detected that this message does 550-5.7.1 not meet IPv6 sending guidelines regarding PTR records and 550-5.7.1 authentication. Please review 550-5.7.1 https://support.google.com/mail/?p=IPv6AuthError for more information 550 5.7.1 . m15si10283441qtc.60 - gsmtp (in reply to end of DATA command)) Apr 17 10:41:38 ns7000905 postfix/cleanup[38650]: 4785C46B825C7: message-id=<20180417144138.4785C46B825C7@dbpilot.net> Apr 17 10:41:38 ns7000905 postfix/bounce[38653]: 16E1046B825C6: sender non-delivery notification: 4785C46B825C7 Apr 17 10:41:38 ns7000905 postfix/qmgr[38641]: 4785C46B825C7: from=<>, size=3063, nrcpt=1 (queue active) Apr 17 10:41:38 ns7000905 postfix/qmgr[38641]: 16E1046B825C6: removed Apr 17 10:41:38 ns7000905 postfix/local[38654]: 4785C46B825C7: to= , relay=local, delay=0.01, delays=0/0.01/0/0, dsn=2.0.0, status=sent (delivered to mailbox) Apr 17 10:41:38 ns7000905 postfix/qmgr[38641]: 4785C46B825C7: removed
REASON
Gmail Guidelines for IPv6 are not met
WORKAROUND
Configure postfix to use IPv4 addresses only by editing the /etc/postfix/main.cf file
################
## Version
################
[root@dbpilot ~]# postconf -d |grep mail_version
mail_version = 2.10.1
milter_macro_v = $mail_name $mail_version
################
## Change this
################
[root@dbpilot ~]# egrep inet_protocol /etc/postfix/main.cf
inet_protocols = all
################
## To this
################
[root@dbpilot ~]# egrep inet_protocol /etc/postfix/main.cf
inet_protocols = ipv4
################
## Restart postfix service
################
[root@dbpilot ~]# systemctl restart postfix
NOTE: Check your Gmail spam folder If after applying the workaround you still don’t receive any emails from your server.
Version : 18:25 17.04.2018
Platform : Centos 7.4 x64
Postfix : 2.10.1
Platform : Centos 7.4 x64
Postfix : 2.10.1
Related Posts
Leave a Reply Cancel reply
This site uses Akismet to reduce spam. Learn how your comment data is processed.
Categories
- Linux (8)
- Iptables (2)
- Memory Usage (1)
- Postfix (1)
- Yum (4)
- Networker (2)
- Oracle (63)
- Account (2)
- AWR (2)
- Database Errors (6)
- Database Performance (9)
- Datapump (3)
- Enterprise Manager (24)
- Enterprise Manager Metrics (4)
- Environments (4)
- High CPU Usage (2)
- High IO Load (4)
- Initialization Parameters (5)
- job_queue_processes (1)
- Processes (3)
- NLS (1)
- Objects (1)
- Objects DDL (2)
- OJVM/PSU/DRU Patches (1)
- PL/SQL (5)
- UTL_FILE (4)
- Prerequisites (1)
- Privileges (1)
- Profile (1)
- Queries (2)
- Redologs (1)
- Resource Limits (1)
- Segment Shrink (1)
- Session (6)
- Spfile (3)
- SQL PLUS (1)
- Spooling (1)
- Standard Queries (7)
- Statistics (2)
- Temporary Tablespace (2)
Tags
/etc/sudoers
Account
Agent
Agent 12c Deinstall
Agent 13c Deployment
Automated Maintenance Tasks
AWR
BLOCKING SESSION
Database Auditing
Database Directory
Database Performance
Datapump
DBMS_SYSTEM
Enterprise Manager
Enterprise Manager Metrics
Failed Logins (Historical) Metric
Failed Logins Metric
Gather Statistics Job
GET_ENV
High IO Load
Idle Sessions
Initialization Parameters
LOCKED(TIMED)
OEM
OEM 12.1.0.4
OEM 13.1.0.0.0
OMS
Processes
Repository
Retrieve Object DDL
ROW LOCK
Scheduler
Schema Statistics
Scripts
Sessions
spfile
SQL_ID
Standard Query
TRANSACTION
User Grants
UTL_FILE
WAITING SESSION
Window Group
Window Name
Yum