Unable to send Mail and connect to port 25 from Guest

P

ParadoxLeon

New Member
Apr 25, 2024
1
0
1
Hi, I have a mail server running in a guest vm I can revive mail but cant send them.
when trying telnet mailsec.protonmail.ch 25 from the guest it wont connect but from the host it works.
connect to mailsec.protonmail.ch[185.205.70.129]:25: Connection timed out
when i ping mailsec.protonmail.ch from the vm it gets resolved.

Code: 
tcpdump -i ens18 -n host mailsec.protonmail.ch and port 25
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on ens18, link-type EN10MB (Ethernet), snapshot length 262144 bytes
11:32:38.905681 IP 10.10.10.11.42280 > 185.205.70.129.25: Flags [S], seq 3810522197, win 64240, options [mss 1460,sackOK,TS val 2423496757 ecr 0,nop,wscale 7], length 0
11:32:39.937306 IP 10.10.10.11.42280 > 185.205.70.129.25: Flags [S], seq 3810522197, win 64240, options [mss 1460,sackOK,TS val 2423497789 ecr 0,nop,wscale 7], length 0
11:32:41.953345 IP 10.10.10.11.42280 > 185.205.70.129.25: Flags [S], seq 3810522197, win 64240, options [mss 1460,sackOK,TS val 2423499805 ecr 0,nop,wscale 7], length 0
11:32:46.113336 IP 10.10.10.11.42280 > 185.205.70.129.25: Flags [S], seq 3810522197, win 64240, options [mss 1460,sackOK,TS val 2423503965 ecr 0,nop,wscale 7], length 0
11:34:31.455517 IP 10.10.10.11.56104 > 185.205.70.129.25: Flags [S], seq 2089829366, win 64240, options [mss 1460,sackOK,TS val 2423609307 ecr 0,nop,wscale 7], length 0
11:34:31.508028 IP 10.10.10.11.56106 > 185.205.70.129.25: Flags [S], seq 2032398107, win 64240, options [mss 1460,sackOK,TS val 2423609359 ecr 0,nop,wscale 7], length 0
11:34:32.481318 IP 10.10.10.11.56104 > 185.205.70.129.25: Flags [S], seq 2089829366, win 64240, options [mss 1460,sackOK,TS val 2423610333 ecr 0,nop,wscale 7], length 0
11:34:32.513335 IP 10.10.10.11.56106 > 185.205.70.129.25: Flags [S], seq 2032398107, win 64240, options [mss 1460,sackOK,TS val 2423610365 ecr 0,nop,wscale 7], length 0
11:34:34.497311 IP 10.10.10.11.56104 > 185.205.70.129.25: Flags [S], seq 2089829366, win 64240, options [mss 1460,sackOK,TS val 2423612349 ecr 0,nop,wscale 7], length 0
11:34:34.529287 IP 10.10.10.11.56106 > 185.205.70.129.25: Flags [S], seq 2032398107, win 64240, options [mss 1460,sackOK,TS val 2423612381 ecr 0,nop,wscale 7], length 0
11:34:38.753315 IP 10.10.10.11.56106 > 185.205.70.129.25: Flags [S], seq 2032398107, win 64240, options [mss 1460,sackOK,TS val 2423616605 ecr 0,nop,wscale 7], length 0
11:34:38.753335 IP 10.10.10.11.56104 > 185.205.70.129.25: Flags [S], seq 2089829366, win 64240, options [mss 1460,sackOK,TS val 2423616605 ecr 0,nop,wscale 7], length 0
11:34:46.945318 IP 10.10.10.11.56104 > 185.205.70.129.25: Flags [S], seq 2089829366, win 64240, options [mss 1460,sackOK,TS val 2423624797 ecr 0,nop,wscale 7], length 0
11:34:46.945339 IP 10.10.10.11.56106 > 185.205.70.129.25: Flags [S], seq 2032398107, win 64240, options [mss 1460,sackOK,TS val 2423624797 ecr 0,nop,wscale 7], length 0
11:35:01.485735 IP 10.10.10.11.47382 > 176.119.200.129.25: Flags [S], seq 2476365116, win 64240, options [mss 1460,sackOK,TS val 645360638 ecr 0,nop,wscale 7], length 0
11:35:01.537388 IP 10.10.10.11.36508 > 185.70.42.129.25: Flags [S], seq 2426097404, win 64240, options [mss 1460,sackOK,TS val 2897422578 ecr 0,nop,wscale 7], length 0
11:35:02.497328 IP 10.10.10.11.47382 > 176.119.200.129.25: Flags [S], seq 2476365116, win 64240, options [mss 1460,sackOK,TS val 645361650 ecr 0,nop,wscale 7], length 0
11:35:02.561326 IP 10.10.10.11.36508 > 185.70.42.129.25: Flags [S], seq 2426097404, win 64240, options [mss 1460,sackOK,TS val 2897423602 ecr 0,nop,wscale 7], length 0
11:35:04.513318 IP 10.10.10.11.47382 > 176.119.200.129.25: Flags [S], seq 2476365116, win 64240, options [mss 1460,sackOK,TS val 645363666 ecr 0,nop,wscale 7], length 0
11:35:04.577321 IP 10.10.10.11.36508 > 185.70.42.129.25: Flags [S], seq 2426097404, win 64240, options [mss 1460,sackOK,TS val 2897425618 ecr 0,nop,wscale 7], length 0
11:35:08.705327 IP 10.10.10.11.36508 > 185.70.42.129.25: Flags [S], seq 2426097404, win 64240, options [mss 1460,sackOK,TS val 2897429746 ecr 0,nop,wscale 7], length 0
11:35:08.705349 IP 10.10.10.11.47382 > 176.119.200.129.25: Flags [S], seq 2476365116, win 64240, options [mss 1460,sackOK,TS val 645367858 ecr 0,nop,wscale 7], length 0
11:35:16.897322 IP 10.10.10.11.47382 > 176.119.200.129.25: Flags [S], seq 2476365116, win 64240, options [mss 1460,sackOK,TS val 645376050 ecr 0,nop,wscale 7], length 0
11:35:16.897345 IP 10.10.10.11.36508 > 185.70.42.129.25: Flags [S], seq 2426097404, win 64240, options [mss 1460,sackOK,TS val 2897437938 ecr 0,nop,wscale 7], length 0
11:44:43.845745 IP 10.10.10.11.47968 > 176.119.200.129.25: Flags [S], seq 1082934135, win 64240, options [mss 1460,sackOK,TS val 645942998 ecr 0,nop,wscale 7], length 0
11:44:44.865314 IP 10.10.10.11.47968 > 176.119.200.129.25: Flags [S], seq 1082934135, win 64240, options [mss 1460,sackOK,TS val 645944018 ecr 0,nop,wscale 7], length 0
11:44:46.881313 IP 10.10.10.11.47968 > 176.119.200.129.25: Flags [S], seq 1082934135, win 64240, options [mss 1460,sackOK,TS val 645946034 ecr 0,nop,wscale 7], length 0
11:44:51.105312 IP 10.10.10.11.47968 > 176.119.200.129.25: Flags [S], seq 1082934135, win 64240, options [mss 1460,sackOK,TS val 645950258 ecr 0,nop,wscale 7], length 0
11:44:59.297325 IP 10.10.10.11.47968 > 176.119.200.129.25: Flags [S], seq 1082934135, win 64240, options [mss 1460,sackOK,TS val 645958450 ecr 0,nop,wscale 7], length 0
11:45:13.870308 IP 10.10.10.11.47854 > 185.205.70.129.25: Flags [S], seq 153863800, win 64240, options [mss 1460,sackOK,TS val 2424251722 ecr 0,nop,wscale 7], length 0
11:45:14.881306 IP 10.10.10.11.47854 > 185.205.70.129.25: Flags [S], seq 153863800, win 64240, options [mss 1460,sackOK,TS val 2424252733 ecr 0,nop,wscale 7], length 0
11:45:16.897335 IP 10.10.10.11.47854 > 185.205.70.129.25: Flags [S], seq 153863800, win 64240, options [mss 1460,sackOK,TS val 2424254749 ecr 0,nop,wscale 7], length 0
11:45:21.057319 IP 10.10.10.11.47854 > 185.205.70.129.25: Flags [S], seq 153863800, win 64240, options [mss 1460,sackOK,TS val 2424258909 ecr 0,nop,wscale 7], length 0
11:45:29.249316 IP 10.10.10.11.47854 > 185.205.70.129.25: Flags [S], seq 153863800, win 64240, options [mss 1460,sackOK,TS val 2424267101 ecr 0,nop,wscale 7], length 0
 
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